successor vs compeer

successor and compeer both are nouns.

Word	Noun	Adjective	Verb	Adverb
successor	Yes	No	No	No
compeer	Yes	No	No	No

As nouns, compeer is a hypernym of successor; that is, compeer is a word with a broader meaning than successor:

Other hypernyms of successor include equal, match, peer.

successor (noun)	compeer (noun)
a thing or person that immediately replaces something or someone	a person who is of equal standing with another in a group
a person who inherits some title or office
a person who follows next in order