sooty vs jet-black

sooty and jet-black both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sooty	No	Yes	No	No
jet-black	No	Yes	No	No

As adjectives, sooty and jet-black are synonyms defined as:

sooty and jet-black: of the blackest black; similar to the color of jet or coal

Other synonyms of sooty include coal-black, jet, pitchy.

sooty (adjective)	jet-black (adjective)
of the blackest black; similar to the color of jet or coal	of the blackest black; similar to the color of jet or coal
covered with or as if with soot