proteinase vs urokinase

proteinase and urokinase both are nouns.

Word	Noun	Adjective	Verb	Adverb
proteinase	Yes	No	No	No
urokinase	Yes	No	No	No

As nouns, urokinase is a hyponym of proteinase; that is, urokinase is a word with a more specific, narrower meaning than proteinase:

proteinase: any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis
urokinase: protease produced in the kidney that converts plasminogen to plasmin and so initiates fibrinolysis

proteinase (noun)	urokinase (noun)
any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis	protease produced in the kidney that converts plasminogen to plasmin and so initiates fibrinolysis