cannulation vs insertion

cannulation and insertion both are nouns.

Word	Noun	Adjective	Verb	Adverb
cannulation	Yes	No	No	No
insertion	Yes	No	No	No

As nouns, insertion is a hypernym of cannulation; that is, insertion is a word with a broader meaning than cannulation:

Other hypernyms of cannulation include introduction, intromission.

cannulation (noun)	insertion (noun)
the insertion of a cannula or tube into a hollow body organ	the act of putting one thing into another
	a message (spoken or written) that is introduced or inserted