vasotomy vs incision

vasotomy and incision both are nouns.

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

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

vasotomy: surgical incision into or division of the vas deferens
incision: the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)

Other hypernyms of vasotomy include section, surgical incision.

vasotomy (noun)	incision (noun)
surgical incision into or division of the vas deferens	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