fellow vs associate

fellow and associate both are nouns.

Word	Noun	Adjective	Verb	Adverb
fellow	Yes	No	No	No
associate	Yes	Yes	Yes	No

As nouns, fellow and associate are synonyms defined as:

fellow and associate: a friend who is frequently in the company of another

Other synonyms of fellow include companion, comrade, familiar.

As nouns, associate is a hypernym of fellow; that is, associate is a word with a broader meaning than fellow:

fellow (noun)	associate (noun)
a boy or man	a degree granted by a two-year college on successful completion of the undergraduates course of studies
a man who is the lover of a man or woman	any event that usually accompanies or is closely connected with another
a friend who is frequently in the company of another	a person who joins with others in some activity or endeavor
a person who is member of one's class or profession	a friend who is frequently in the company of another
an informal form of address for a man	a person with subordinate membership in a society, institution, or commercial enterprise
a member of a learned society
one of a pair

fellow (adjective)	associate (adjective)
	having partial rights and privileges or subordinate status

fellow (verb)	associate (verb)
	make a logical or causal connection
	bring or come into association or action
	keep company with; hang out with