comrade vs playmate

comrade and playmate both are nouns.

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

As nouns, playmate is a hyponym of comrade; that is, playmate is a word with a more specific, narrower meaning than comrade:

Other hyponyms of comrade include date, escort, playfellow, tovarich, tovarisch.

comrade (noun)	playmate (noun)
a friend who is frequently in the company of another	a companion at play
used as a term of address for those male persons engaged in the same movement