lapin vs rabbit

lapin and rabbit both are nouns.

Word	Noun	Adjective	Verb	Adverb
lapin	Yes	No	No	No
rabbit	Yes	No	Yes	No

As nouns, rabbit is a hypernym of lapin; that is, rabbit is a word with a broader meaning than lapin:

lapin: castrated male rabbit
rabbit: any of various burrowing animals of the family Leporidae having long ears and short tails; some domesticated and raised for pets or food

Other hypernyms of lapin include coney, cony.

As nouns, lapin and rabbit are synonyms defined as:

lapin (noun)	rabbit (noun)
castrated male rabbit	any of various burrowing animals of the family Leporidae having long ears and short tails; some domesticated and raised for pets or food
the fur of a rabbit	flesh of any of various rabbits or hares (wild or domesticated) eaten as food
	the fur of a rabbit

lapin (verb)	rabbit (verb)
	hunt rabbits