Marmota flaviventris vs rockchuck

Marmota flaviventris and rockchuck both are nouns.

Word	Noun	Adjective	Verb	Adverb
Marmota flaviventris	Yes	No	No	No
rockchuck	Yes	No	No	No

As nouns, Marmota flaviventris and rockchuck are synonyms defined as:

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

Other synonyms of Marmota flaviventris include yellowbelly marmot.

Marmota flaviventris (noun)	rockchuck (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