Answer 1: The friars really confront the people of God in his parish while the monks live in contemplation inside the monastery.The monk does not really evangelize outside.
Answer 2:The first answer's correct. Here's more...
The questioner uses the word "were" as though it were a thing of the past. Nothing could be further from the truth. It continues, still; and in much the same way, today, as in the past.
Monks and friars both live similarly contemplative lives, "in community," in a "friary" (in the case of friars), or a "monastery" (in the case of monks). Another word for "monk" (and sometimes intentionally used instead of "monk") is "monastic."
The monk lives a "cloistered" life, in a monastery, serving the world largely through prayer. Some are even "ascetic," meaning that they deprive themselves of various worldly things as part of their service to God. Some monks, though they live together in a monastery and so are already in a sort of seclusion, do so in in even greater seclusion within the monastery, and so are hermits. Some monasteries even have separate little cabin-like buildings (called "hermitages") in which a single monk may live for long periods, as a hermit, having no contact with anyone. Some hermits live entirely outside the monaster, in a hermitage that's out in the world, somewhere. If there are no separate hermitages in the monastery, and so if the monk lives in seclusion in his cell in the monastery, then he's called a "recluse." Monks who live in full community in the monastery are called "cenobites."
In the case of monks who perform some kind of service for a fee or donation, or who manufacture something of value, used by the outside world, then they serve by providing that, too; and the proceeds, of course, help to support the community. Many Trappist orders, for example, make and sell bread that is of very high quality. Some orders are in or near vineyards, and have wineries, and make wine... including alter wine for use during the Eucharist. Monks, though, in any case, rarely, if ever, leave the monastery.
Unlike at least most (but certainly not all) monks, Friars do their work nearly entirely out in the world. Friars are not "cloistered." That is the single largest salient difference between friars and monks. There are others, but that's the big -- or at least the most obvious -- one.
Monks and friars often even look alike, wearing similar kinds of robes (called "habits"), consisting, often, of a tunic, over which often fits a scapular, and then usually with a hood (sometimes called a "cowl;" although some call the entire robe, if there's no separate tunic and scapular, but if there is a hood, the "cowl"); and they both live similarly prayerful and contemplative lives...
...punctuated, though, by praying what's called "The Daily Office," or "The Divine Office," or "The Liturgy of the Hours," or "The Canonical Hours," all of which consist of several prayers per day and night, in a largely Bendictine practice, at the following times of day and/or night...
The permanent vow usually also includes that the avowed/professed agees to be buried in the monastery's or friary's private, on-the-grounds cemetery; and so professing permanent vows usually means that one's corporeal body never leaves the grounds, ever again (other than, of course, visits elsewhere, or to go to work, etc.). In the case of friars, "grounds" includes all friaries owned and/or operated by their order; so the friar may move, during his life, from friary to friary, but the order usually has a cemetary at the main or "headquarters" (for lack of a better term) friary.
If the candidate has no post-secondary religious education, some orders will encourage the acquisition of a Bachelor of Theology (BTh or ThB), or Bachelor of Divinity (BDiv or BD) degree; and the novitiate will be adjusted to a year to complete The Bachelor's freshman year; and then the "solemnly avowed" period adjusted to three years long, during which the sophomore thru senior years of the BTh/ThB or BDiv/BD are earned. If the candidate wants to become a priest or theological professor, then the bachelors degree could be begun during postulancy, and continue thru the novitiate and into the solemnly-avowed period; which solemnly-avowed period could then have its length adjusted to coincide with the completion of one of the masters degrees listed in the next paragraph. How those periods would be adjusted, though, would be entirely flexible; and the degree could end-up being something mostly earned during the solemnly-avowed or even permanently-avowed periods.
If the candidate has a post-secondary religious education -- or even just a "suitable to religion" sort of bachelor's degree in almost any subject -- and wants to also become a priest or theology professor, then, in some orders, a Master of Theology (MTh or ThM), or Master of Sacred Theology (STM), or even a Master of Divinity (MDiv)) could be earned during the residential postulancy-thru-end-of-solemnly-avowed periods; or during the permanently-avowed period.
Any doctoral-level degree (PhD, ThD or DMin) would, in some orders, be earned only after profession of permanent vows.
The bottom-line answer, then, to the question, "How were/are the lives of friars different from the lives of monks?" is that they're actually not all that different, except that monks are usually cloistered, and friars are usually out and about in the world. The details of the differences, though, are as I've herein above described.
Mendicant Friars originally mean the Franciscans and the Dominicans; since then it has been extended to include Carmelites (1245), the Hermits of St. Augustine (1256), and the Servites (1424). Some other Orders received the name later on.
Mendicant Friars are forbidden by Canon Law and their statues from personally owning anything, and they are required to work or beg for their living. Further, they are not bound to a monastery.
Monks, when they make their vows, take a vow of stability (something that Friars do not) to the monastery in which they are professed, thus binding themselves to that House for the remainder of their life.
Deacons, priests, bishops, monks, friars, brothers.
Friars live the evangelical counsels (vows of poverty, chastity and obedience) to service the community. Monks practice asceticism (living alone or with other monks) and devotion. Monks are self-sufficient, whereas friars live among other people and rely on donations. Friars are can also travel within a wide area, but monks stay in the same place.
Friars work in the community and they work while Monks work and preach Well for one thing, the monks robe is made of Monk's Clothe, and the friar's isn't. Well for one thing, the monks robe is made of Monk's Clothe, and the friar's isn't.
Both monks and friars have been teachers throughout their history. The Benedictine monks were the first to establish regular schools in their monasteries, but, of course, they were founded six hundred years before Friars.
friars lived and worked in the community
Monks studied more on a science scale while friars were more like what a priest is today.
"Friars" were members of the Franciscan Order, established by Francis of Assisi. They often called themselves the "Little Brothers" or "Fratres minores" in Latin, whence the English "friars".
Regular monks, such as Benedictines, Cistercians and Cluniacs lived according to a Rule that set that apart from society. While a monastery might own and manage land, the day-to-day interaction of monks with ordinary people was supposed to be strictly limited. Their life was supposed to be one of quiet contemplation of God, regular worship (they had seven daily ceremonies known as the Opus Dei) and scholarship. Monks and their regular monasteries were most often sited in the countryside, at a distance from larger towns. The mendicant friars, on the other hand, lived by different rules. Orders such as the Dominicans, the Franciscans and the Augustinians were not supposed to be separate from secular life, but rather they lived within normal society, preaching to the people, tending to their spiritual needs, running hospitals, almshouses and schools. They made vows of poverty and were supposed to live on charity: this frequently fell by the wayside, however. They often served urban populations and some historians argue they arose out of the need that came with the growth of cities in the 11th century.
The Franciscan Order. However, they are not monks, they are friars. Monks live in a monastery and work there, friars live in a convent or friary and work in the "real world."
Friars and seminarians are not the same. Seminarians are studying to be priests. Friars are usually monks (a/k/a Christian brothers).
A priory is a house of men or women under religious vows headed by a prior or prioress. Priories may be houses of mendicant friars or religious sisters (as the Dominicans, Augustinians and Carmelites, for instance), or monasteries of monks or nuns (as the Carthusians).
Well... In a fryer you can find chicken, shrimp and potato sticks they'll call french fries later. No, seriously. you misspelled the word. You probably meant a "friary". A friary is a monastery in which friars live. they are basically Roman Catholic monks belonging to mendicant congregations, such as the Franciscans, Dominicans, or Carmelite friars. "Mendicants" mean they subsist by "mendicity", begging, accepting donations or "alms" because they refuse all material ownership. Friars and monks differ, however. Friars live the evangelical counsels (vows of poverty, chastity and obedience) in service to a community, and friaries are open and friars cover extense areas providing community service.. Monks, on the other hand, seclude themselves in isolation, silence, and spend their hours in devotion and contemplation, as well as in self-sufficient sometimes very successful cloisters Those definitions above are certainly over-simplifications, but they'll give you some idea.