Yes, because a verb is an action, something that you do, where as an adjective describes something and a noun is an object. So in the sentence "I attentively watch the TV", 'attentively' is the...
The rule for nouns ending in -ch is that the plural is formed by adding -es, e.g. watch - watches; church - churches; branch - branches.Watch also changes to watches when conjugating the third person...