sure enough vs colloquialism

sure enough is not a noun while colloquialism is a noun.

Word	Noun	Adjective	Verb	Adverb
sure enough	No	No	No	Yes
colloquialism	Yes	No	No	No

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

sure enough (adverb)	colloquialism (adverb)
as supposed or expected
definitely or positively (`sure' is sometimes used informally for `surely')