colloquialism vs all right

colloquialism is a noun but all right is not a noun.

Word	Noun	Adjective	Verb	Adverb
colloquialism	Yes	No	No	No
all right	No	Yes	No	Yes

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

colloquialism (adjective)	all right (adjective)
	being satisfactory or in satisfactory condition

colloquialism (adverb)	all right (adverb)
	an expression of agreement normally occurring at the beginning of a sentence
	without doubt (used to reinforce an assertion)
	in a satisfactory or adequate manner