mastoidectomy vs extirpation

mastoidectomy and extirpation both are nouns.

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

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

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

mastoidectomy (noun)	extirpation (noun)
surgical removal of some or all of the mastoid process	surgical removal of a body part or tissue
	the act of pulling up or out; uprooting; cutting off from existence