smart vs with-it

smart is a noun but with-it is not a noun.

Word	Noun	Adjective	Verb	Adverb
smart	Yes	Yes	Yes	No
with-it	No	Yes	No	No

smart (noun)	with-it (noun)
a kind of pain such as that caused by a wound or a burn or a sore

smart (adjective)	with-it (adjective)
showing mental alertness and calculation and resourcefulness	in accord with the most fashionable ideas or style
capable of independent and apparently intelligent action	having the shrewd resourcefulness needed to survive in an urban environment
quick and brisk
improperly forward or bold
characterized by quickness and ease in learning
painfully severe
elegant and stylish

smart (verb)	with-it (verb)
be the source of pain