colloquialism vs come-at-able

colloquialism is a noun but come-at-able is not a noun.

Word	Noun	Adjective	Verb	Adverb
colloquialism	Yes	No	No	No
come-at-able	No	Yes	No	No

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

colloquialism (adjective)	come-at-able (adjective)
	capable of being reached or attained
	capable of being attained or accomplished