excision vs ablation

excision and ablation both are nouns.

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

As nouns, excision and ablation are synonyms defined as:

Other synonyms of excision include cutting out, extirpation.

excision (noun)	ablation (noun)
surgical removal of a body part or tissue	surgical removal of a body part or tissue
the act of pulling up or out; uprooting; cutting off from existence	the erosive process that reduces the size of glaciers
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