colloquialism vs peeper

colloquialism and peeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
colloquialism	Yes	No	No	No
peeper	Yes	No	No	No

colloquialism (noun)	peeper (noun)
a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech	an animal that makes short high-pitched sounds
	an informal term referring to the eye
	a viewer who enjoys seeing the sex acts or sex organs of others