okay vs colloquialism

okay and colloquialism both are nouns.

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

okay (noun)	colloquialism (noun)
an endorsement	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

okay (adjective)	colloquialism (adjective)
being satisfactory or in satisfactory condition

okay (verb)	colloquialism (verb)
give sanction to

okay (adverb)	colloquialism (adverb)
in a satisfactory or adequate manner