genetic science vs crossbreed

genetic science and crossbreed both are nouns.

Word	Noun	Adjective	Verb	Adverb
genetic science	Yes	No	No	No
crossbreed	Yes	No	Yes	No

genetic science (noun)	crossbreed (noun)
the branch of biology that studies heredity and variation in organisms	(genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species

genetic science (verb)	crossbreed (verb)
	breed animals or plants using parents of different races and varieties