big vs colloquialism

big is not a noun while colloquialism is a noun.

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

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

big (adjective)	colloquialism (adjective)
above average in size or number or quantity or magnitude or extent
conspicuous in position or importance
given or giving freely
generous and understanding and tolerant
marked by intense physical force
significant
prodigious
serious or severe
loud and firm
(of animals) fully developed
in an advanced stage of pregnancy
feeling self-importance
exhibiting self-importance