"JNRJ" is probably an English transliteration of "INRI." INRI is the acronym for the Latin phrase, "Iesvs Nazarenvs Rex Ivdaeorvm," which means: "Jesus of Nazareth, King of the Jews." Pontius Pilate had this phrase written in Latin, Greek, and Hebrew and placed on the cross upon which Christ was crucified (cf. Jn 19:19-22).
Placed above the crucified Saviour indeed were the three phrases as cited above. Most correctly it should be noted that there is no letter "J" in classical latin.
Instead the letter used is the same symbol as the letter "I." Similarly, there is no letter "U" hence the use of "V" in its place.
JNRJ means enerjetic
I do not know what you mean by "universalizing" or "ethnic". However Christianity (which includes the Catholicism) is for all people.
Roman Catholicism is centered (if by centered you mean that the head of Roman Catholicism, the Pope, lives there) in Vatican City, an independent city-state surrounded by Rome.
God, Gold, and Glory was often described as the Spanish's driving force throughout the New World, and they were Catholics, but no, it doesn't mean Catholicism.
Catholicism refers to the the Catholic faith, its teachings and beliefs
if you mean the religion who's head is called the 'pope' then Catholicism. Its a branch of Christianity.
Ad Majorem Dei Gloriam meaning "For the greater glory of God."
If you mean traditional Roman Polytheism then no, Europe was entirely Christian by the renaissance, if you mean Roman Catholicism then yes.
Catholicism.
Odd question, the answer is no, Catholicism is Christianity.
He convented back to Catholicism
A person can be a Catholic. The religion is Catholicism. . Catholicism is a noun, normally a collective noun, Catholic can be a noun or an adjective.
There is no specific ceremony for a Protestant converting to Catholicism, but anyone entering Catholicism must be Baptised.