interbreeding vs mating

interbreeding and mating both are nouns.

Word	Noun	Adjective	Verb	Adverb
interbreeding	Yes	No	No	No
mating	Yes	No	No	No

As nouns, mating is a hypernym of interbreeding; that is, mating is a word with a broader meaning than interbreeding:

interbreeding: (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
mating: the act of pairing a male and female for reproductive purposes

Other hypernyms of interbreeding include conjugation, coupling, pairing, sexual union, union.

interbreeding (noun)	mating (noun)
(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids	the act of pairing a male and female for reproductive purposes
reproduction by parents of different races (especially by white and non-white persons)