perineotomy vs incision

perineotomy and incision both are nouns.

Word	Noun	Adjective	Verb	Adverb
perineotomy	Yes	No	No	No
incision	Yes	No	No	No

As nouns, incision is a hypernym of perineotomy; that is, incision is a word with a broader meaning than perineotomy:

perineotomy: surgical incision into the perineum
incision: the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)

Other hypernyms of perineotomy include section, surgical incision.

perineotomy (noun)	incision (noun)
surgical incision into the perineum	the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
	a depression scratched or carved into a surface