vernacular vs can-do

vernacular is a noun but can-do is not a noun.

Word	Noun	Adjective	Verb	Adverb
vernacular	Yes	Yes	No	No
can-do	No	Yes	No	No

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

vernacular (adjective)	can-do (adjective)
being or characteristic of or appropriate to everyday language	marked by a willingness to tackle a job and get it done