sketch vs depict

sketch is a noun but depict is not a noun.

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

As verbs, depict is a hypernym of sketch; that is, depict is a word with a broader meaning than sketch:

Other hypernyms of sketch include describe, draw.

sketch (noun)	depict (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

sketch (verb)	depict (verb)
describe roughly or briefly or give the main points or summary of	give a description of
make a sketch of	show in, or as in, a picture
	make a portrait of