describe vs descriptive

describe is not an adjective while descriptive is an adjective.

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

describe (adjective)	descriptive (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

describe (verb)	descriptive (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