sketch vs comic strip

sketch and comic strip both are nouns.

Word	Noun	Adjective	Verb	Adverb
sketch	Yes	No	Yes	No
comic strip	Yes	No	No	No

As nouns, comic strip is a hyponym of sketch; that is, comic strip is a word with a more specific, narrower meaning than sketch:

sketch: a humorous or satirical drawing published in a newspaper or magazine
comic strip: a sequence of drawings telling a story in a newspaper or comic book

Other hyponyms of sketch include anime, cartoon strip, funnies, strip.

sketch (noun)	comic strip (noun)
preliminary drawing for later elaboration	a sequence of drawings telling a story in a newspaper or comic book
short descriptive summary (of events)
a humorous or satirical drawing published in a newspaper or magazine
a brief literary description

sketch (verb)	comic strip (verb)
describe roughly or briefly or give the main points or summary of
make a sketch of