peeper vs colloquialism

peeper and colloquialism both are nouns.

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

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