vernacular vs play hooky

vernacular is a noun but play hooky is not a noun.

Word	Noun	Adjective	Verb	Adverb
vernacular	Yes	Yes	No	No
play hooky	No	No	Yes	No

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

vernacular (adjective)	play hooky (adjective)
being or characteristic of or appropriate to everyday language

vernacular (verb)	play hooky (verb)
	play truant from work or school