breed vs copulate

breed is a noun but copulate is not a noun.

Word	Noun	Adjective	Verb	Adverb
breed	Yes	No	Yes	No
copulate	No	No	Yes	No

As verbs, copulate is a hypernym of breed; that is, copulate is a word with a broader meaning than breed:

Other hypernyms of breed include couple, mate, pair.

breed (noun)	copulate (noun)
a special type
a special variety of domesticated animals within a species

breed (verb)	copulate (verb)
have young (animals) or reproduce (organisms)	engage in sexual intercourse
copulate with a female, used especially of horses
cause to procreate (animals)
call forth