sable vs soot black

sable and soot black both are nouns.

Word	Noun	Adjective	Verb	Adverb
sable	Yes	Yes	No	No
soot black	Yes	No	No	No

As nouns, sable and soot black are synonyms defined as:

Other synonyms of sable include coal black, ebony, jet black, pitch black.

sable (noun)	soot black (noun)
marten of northern Asian forests having luxuriant dark brown fur	a very dark black
a scarf (or trimming) made of sable
an artist's brush made of sable hairs
a very dark black
the expensive dark brown fur of the marten

sable (adjective)	soot black (adjective)
of a dark somewhat brownish black