vernacular vs pint-size

vernacular is a noun but pint-size is not a noun.

Word	Noun	Adjective	Verb	Adverb
vernacular	Yes	Yes	No	No
pint-size	No	Yes	No	No

vernacular (noun)	pint-size (noun)
the everyday speech of the people (as distinguished from literary language)
a characteristic language of a particular group (as among thieves)

vernacular (adjective)	pint-size (adjective)
being or characteristic of or appropriate to everyday language	well below average height