transfusion vs insertion

transfusion and insertion both are nouns.

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

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

transfusion: the introduction of blood or blood plasma into a vein or artery
insertion: the act of putting one thing into another

Other hypernyms of transfusion include introduction, intromission.

transfusion (noun)	insertion (noun)
the introduction of blood or blood plasma into a vein or artery	the act of putting one thing into another
the action of pouring a liquid from one vessel to another	a message (spoken or written) that is introduced or inserted