marten vs musteline

marten and musteline both are nouns.

Word	Noun	Adjective	Verb	Adverb
marten	Yes	No	No	No
musteline	Yes	No	No	No

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

marten: agile slender-bodied arboreal mustelids somewhat larger than weasels
musteline: fissiped fur-bearing carnivorous mammals

Other hypernyms of marten include mustelid, musteline mammal.

marten (noun)	musteline (noun)
agile slender-bodied arboreal mustelids somewhat larger than weasels	fissiped fur-bearing carnivorous mammals