peptidase vs proteinase

peptidase and proteinase both are nouns.

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

As nouns, peptidase and proteinase are synonyms defined as:

peptidase 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 peptidase include protease, proteolytic enzyme.

peptidase (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