prostatectomy vs ablation

prostatectomy and ablation both are nouns.

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

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

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

prostatectomy (noun)	ablation (noun)
surgical removal of part or all of the prostate gland	surgical removal of a body part or tissue
	the erosive process that reduces the size of glaciers