Acer glabrum vs Rocky-mountain maple

Acer glabrum and Rocky-mountain maple both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acer glabrum	Yes	No	No	No
Rocky-mountain maple	Yes	No	No	No

As nouns, Acer glabrum and Rocky-mountain maple are synonyms defined as:

Acer glabrum and Rocky-mountain maple: small maple of northwestern North America

Other synonyms of Acer glabrum include dwarf maple.

Acer glabrum (noun)	Rocky-mountain maple (noun)
small maple of northwestern North America	small maple of northwestern North America