comrade vs companion

comrade and companion both are nouns.

Word	Noun	Adjective	Verb	Adverb
comrade	Yes	No	No	No
companion	Yes	No	Yes	No

As nouns, comrade and companion are synonyms defined as:

comrade and companion: a friend who is frequently in the company of another

Other synonyms of comrade include associate, familiar, fellow.

comrade (noun)	companion (noun)
a friend who is frequently in the company of another	a friend who is frequently in the company of another
used as a term of address for those male persons engaged in the same movement	one paid to accompany or assist or live with another
	a traveler who accompanies you

comrade (verb)	companion (verb)
	be a companion to somebody