hybridise vs backcross

hybridise and backcross both are verbs.

Word	Noun	Adjective	Verb	Adverb
hybridise	No	No	Yes	No
backcross	No	No	Yes	No

As verbs, backcross is a hyponym of hybridise; that is, backcross is a word with a more specific, narrower meaning than hybridise:

hybridise: breed animals or plants using parents of different races and varieties
backcross: mate a hybrid of the first generation with one of its parents

hybridise (verb)	backcross (verb)
breed animals or plants using parents of different races and varieties	mate a hybrid of the first generation with one of its parents