insufficient vs scant

insufficient and scant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
insufficient	No	Yes	No	No
scant	No	Yes	Yes	No

insufficient (adjective)	scant (adjective)
of a quantity not able to fulfill a need or requirement	less than the correct or legal or full amount often deliberately so

insufficient (verb)	scant (verb)
	supply sparingly and with restricted quantities
	limit in quality or quantity
	work hastily or carelessly; deal with inadequately and superficially