Acer spicatum vs mountain maple

Acer spicatum and mountain maple both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acer spicatum	Yes	No	No	No
mountain maple	Yes	No	No	No

As nouns, Acer spicatum and mountain maple are synonyms defined as:

Acer spicatum and mountain maple: small shrubby maple of eastern North America; scarlet in autumn

Other synonyms of Acer spicatum include mountain alder.

Acer spicatum (noun)	mountain maple (noun)
small shrubby maple of eastern North America; scarlet in autumn	small shrubby maple of eastern North America; scarlet in autumn