transfusion vs blood transfusion

transfusion and blood transfusion both are nouns.

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

As nouns, transfusion and blood transfusion are synonyms defined as:

transfusion and blood transfusion: the introduction of blood or blood plasma into a vein or artery

transfusion (noun)	blood transfusion (noun)
the introduction of blood or blood plasma into a vein or artery	the introduction of blood or blood plasma into a vein or artery
the action of pouring a liquid from one vessel to another