Activase vs clot buster

Activase and clot buster both are nouns.

Word	Noun	Adjective	Verb	Adverb
Activase	Yes	No	No	No
clot buster	Yes	No	No	No

As nouns, clot buster is a hypernym of Activase; that is, clot buster is a word with a broader meaning than Activase:

Activase: a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction
clot buster: a kind of pharmaceutical that can break up clots blocking the flow of blood to the heart muscle

Other hypernyms of Activase include thrombolytic, thrombolytic agent.

Activase (noun)	clot buster (noun)
a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot; used in treating acute myocardial infarction	a kind of pharmaceutical that can break up clots blocking the flow of blood to the heart muscle