descriptive vs describe

descriptive is an adjective but describe is not an adjective.

Word	Noun	Adjective	Verb	Adverb
descriptive	No	Yes	No	No
describe	No	No	Yes	No

descriptive (adjective)	describe (adjective)
of or relating to an approach to linguistic analysis that aims at the description of a language's forms, structures and usage
serving to describe or inform or characterized by description

descriptive (verb)	describe (verb)
	identify as in botany or biology, for example
	give a description of
	to give an account or representation of in words
	make a mark or lines on a surface