sable vs marten cat

sable and marten cat both are nouns.

Word	Noun	Adjective	Verb	Adverb
sable	Yes	Yes	No	No
marten cat	Yes	No	No	No

As nouns, marten cat is a hypernym of sable; that is, marten cat is a word with a broader meaning than sable:

sable: marten of northern Asian forests having luxuriant dark brown fur
marten cat: agile slender-bodied arboreal mustelids somewhat larger than weasels

Other hypernyms of sable include marten.

sable (noun)	marten cat (noun)
marten of northern Asian forests having luxuriant dark brown fur	agile slender-bodied arboreal mustelids somewhat larger than weasels
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)	marten cat (adjective)
of a dark somewhat brownish black