backcross vs hybridise

backcross and hybridise both are verbs.

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

As verbs, hybridise is a hypernym of backcross; that is, hybridise is a word with a broader meaning than backcross:

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

Other hypernyms of backcross include cross, crossbreed, hybridize, interbreed.

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