protease vs peptidase

protease and peptidase both are nouns.

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

As nouns, protease and peptidase are synonyms defined as:

protease and peptidase: 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 proteinase, proteolytic enzyme.

protease (noun)	peptidase (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