main drag vs colloquialism

main drag and colloquialism both are nouns.

Word	Noun	Adjective	Verb	Adverb
main drag	Yes	No	No	No
colloquialism	Yes	No	No	No

main drag (noun)	colloquialism (noun)
the main street of a town or city	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech