giveaway vs colloquialism

giveaway and colloquialism both are nouns.

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

giveaway (noun)	colloquialism (noun)
an unintentional disclosure	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
a television or radio program in which contestants compete for awards
a gift of public land or resources for the private gain of a limited group