perfusion vs insertion

perfusion and insertion both are nouns.

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

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

perfusion: pumping a liquid into an organ or tissue (especially by way of blood vessels)
insertion: the act of putting one thing into another

Other hypernyms of perfusion include introduction, intromission.

perfusion (noun)	insertion (noun)
pumping a liquid into an organ or tissue (especially by way of blood vessels)	the act of putting one thing into another
	a message (spoken or written) that is introduced or inserted