colloquialism vs evidently

colloquialism is a noun but evidently is not a noun.

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

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

colloquialism (adverb)	evidently (adverb)
	unmistakably (`plain' is often used informally for `plainly')