woodchuck vs marmot

woodchuck and marmot both are nouns.

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

As nouns, marmot is a hypernym of woodchuck; that is, marmot is a word with a broader meaning than woodchuck:

woodchuck: reddish brown North American marmot
marmot: stocky coarse-furred burrowing rodent with a short bushy tail found throughout the Northern Hemisphere; hibernates in winter

woodchuck (noun)	marmot (noun)
reddish brown North American marmot	stocky coarse-furred burrowing rodent with a short bushy tail found throughout the Northern Hemisphere; hibernates in winter