ablation vs excision

ablation and excision both are nouns.

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

As nouns, ablation and excision are synonyms defined as:

Other synonyms of ablation include cutting out, extirpation.

ablation (noun)	excision (noun)
surgical removal of a body part or tissue	surgical removal of a body part or tissue
the erosive process that reduces the size of glaciers	the act of pulling up or out; uprooting; cutting off from existence
	the act of banishing a member of a church from the communion of believers and the privileges of the church; cutting a person off from a religious society
	the omission that is made when an editorial change shortens a written passage