coevals vs peer group

coevals and peer group both are nouns.

Word	Noun	Adjective	Verb	Adverb
coevals	Yes	No	No	No
peer group	Yes	No	No	No

As nouns, peer group is a hyponym of coevals; that is, peer group is a word with a more specific, narrower meaning than coevals:

coevals: all the people living at the same time or of approximately the same age
peer group: contemporaries of the same status

Other hyponyms of coevals include youth culture.

coevals (noun)	peer group (noun)
all the people living at the same time or of approximately the same age	contemporaries of the same status