rockchuck vs yellowbelly marmot

rockchuck and yellowbelly marmot both are nouns.

Word	Noun	Adjective	Verb	Adverb
rockchuck	Yes	No	No	No
yellowbelly marmot	Yes	No	No	No

As nouns, rockchuck and yellowbelly marmot are synonyms defined as:

rockchuck and yellowbelly marmot: heavy-bodied yellowish-brown marmot of rocky areas of western North America

Other synonyms of rockchuck include Marmota flaviventris.

rockchuck (noun)	yellowbelly marmot (noun)
heavy-bodied yellowish-brown marmot of rocky areas of western North America	heavy-bodied yellowish-brown marmot of rocky areas of western North America