appendicectomy vs ablation

appendicectomy and ablation both are nouns.

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

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

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

appendicectomy (noun)	ablation (noun)
surgical removal of the vermiform appendix	surgical removal of a body part or tissue
	the erosive process that reduces the size of glaciers