guvnor vs vernacular

guvnor and vernacular both are nouns.

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

guvnor (noun)	vernacular (noun)
(British slang) person in command	the everyday speech of the people (as distinguished from literary language)
	a characteristic language of a particular group (as among thieves)

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