vernacular vs Jap

vernacular and Jap both are nouns.

Word	Noun	Adjective	Verb	Adverb
vernacular	Yes	Yes	No	No
Jap	Yes	No	No	No

vernacular (noun)	Jap (noun)
the everyday speech of the people (as distinguished from literary language)	(offensive slang) offensive term for a person of Japanese descent
a characteristic language of a particular group (as among thieves)

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