tiptop vs colloquialism

tiptop and colloquialism both are nouns.

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

tiptop (noun)	colloquialism (noun)
the extreme top or summit	a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
the highest level or degree attainable; the highest stage of development

tiptop (adjective)	colloquialism (adjective)
of the highest quality