all right vs colloquialism

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

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

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

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

all right (adverb)	colloquialism (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