pneumonectomy vs ablation

pneumonectomy and ablation both are nouns.

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

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

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

pneumonectomy (noun)	ablation (noun)
surgical removal of a lung (usually to treat lung cancer)	surgical removal of a body part or tissue
	the erosive process that reduces the size of glaciers