vernacular vs boffin

vernacular and boffin both are nouns.

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

vernacular (noun)	boffin (noun)
the everyday speech of the people (as distinguished from literary language)	(British slang) a scientist or technician engaged in military research
a characteristic language of a particular group (as among thieves)

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