artificial heart vs implant

artificial heart and implant both are nouns.

Word	Noun	Adjective	Verb	Adverb
artificial heart	Yes	No	No	No
implant	Yes	No	Yes	No

As nouns, implant is a hypernym of artificial heart; that is, implant is a word with a broader meaning than artificial heart:

artificial heart (noun)	implant (noun)
a pump that replaces the natural heart	a prosthesis placed permanently in tissue

artificial heart (verb)	implant (verb)
	put firmly in the mind
	fix or set securely or deeply
	become attached to and embedded in the uterus