describe vs sketch

describe is not a noun while sketch is a noun.

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

As verbs, sketch is a hyponym of describe; that is, sketch is a word with a more specific, narrower meaning than describe:

Other hyponyms of describe include represent, delineate, adumbrate, outline.

describe (noun)	sketch (noun)
	preliminary drawing for later elaboration
	short descriptive summary (of events)
	a humorous or satirical drawing published in a newspaper or magazine
	a brief literary description

describe (verb)	sketch (verb)
identify as in botany or biology, for example	describe roughly or briefly or give the main points or summary of
give a description of	make a sketch of
to give an account or representation of in words
make a mark or lines on a surface