red maple vs Acer rubrum

red maple and Acer rubrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
red maple	Yes	No	No	No
Acer rubrum	Yes	No	No	No

As nouns, red maple and Acer rubrum are synonyms defined as:

red maple and Acer rubrum: maple of eastern and central America; five-lobed leaves turn scarlet and yellow in autumn

Other synonyms of red maple include scarlet maple, swamp maple.

red maple (noun)	Acer rubrum (noun)
maple of eastern and central America; five-lobed leaves turn scarlet and yellow in autumn	maple of eastern and central America; five-lobed leaves turn scarlet and yellow in autumn