gnawer vs marmot

gnawer and marmot both are nouns.

Word	Noun	Adjective	Verb	Adverb
gnawer	Yes	No	No	No
marmot	Yes	No	No	No

As nouns, marmot is a hyponym of gnawer; that is, marmot is a word with a more specific, narrower meaning than gnawer:

gnawer: relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
marmot: stocky coarse-furred burrowing rodent with a short bushy tail found throughout the Northern Hemisphere; hibernates in winter

gnawer (noun)	marmot (noun)
relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing	stocky coarse-furred burrowing rodent with a short bushy tail found throughout the Northern Hemisphere; hibernates in winter