teaser vs colloquialism

teaser and colloquialism both are nouns.

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

teaser (noun)	colloquialism (noun)
a flat at each side of the stage to prevent the audience from seeing into the wings	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
a device for teasing wool
a particularly baffling problem that is said to have a correct solution
an advertisement that offers something free in order to arouse customers' interest
an attention-getting opening presented at the start of a television show
someone given to teasing (as by mocking or stirring curiosity)
a worker who teases wool