protease vs proteinase

protease and proteinase both are nouns.

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

As nouns, protease and proteinase are synonyms defined as:

protease and proteinase: any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis

Other synonyms of protease include peptidase, proteolytic enzyme.

protease (noun)	proteinase (noun)
any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis	any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis