endarterectomy vs extirpation

endarterectomy and extirpation both are nouns.

Word	Noun	Adjective	Verb	Adverb
endarterectomy	Yes	No	No	No
extirpation	Yes	No	No	No

As nouns, extirpation is a hypernym of endarterectomy; that is, extirpation is a word with a broader meaning than endarterectomy:

endarterectomy: surgical removal of the inner lining of an artery that is clogged with atherosclerosis
extirpation: surgical removal of a body part or tissue

Other hypernyms of endarterectomy include ablation, cutting out, excision.

endarterectomy (noun)	extirpation (noun)
surgical removal of the inner lining of an artery that is clogged with atherosclerosis	surgical removal of a body part or tissue
	the act of pulling up or out; uprooting; cutting off from existence