stapedectomy vs ablation

stapedectomy and ablation both are nouns.

Word	Noun	Adjective	Verb	Adverb
stapedectomy	Yes	No	No	No
ablation	Yes	No	No	No

As nouns, ablation is a hypernym of stapedectomy; that is, ablation is a word with a broader meaning than stapedectomy:

Other hypernyms of stapedectomy include cutting out, excision, extirpation.

stapedectomy (noun)	ablation (noun)
surgical removal of the stapes of the middle ear	surgical removal of a body part or tissue
	the erosive process that reduces the size of glaciers