cracking vs colloquialism

cracking and colloquialism both are nouns.

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

cracking (noun)	colloquialism (noun)
the act of cracking something	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
a sudden sharp noise
the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)

cracking (adjective)	colloquialism (adjective)
excellent