Acer rubrum vs swamp maple

Acer rubrum and swamp maple both are nouns.

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

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

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

Other synonyms of Acer rubrum include red maple, scarlet maple.

Acer rubrum (noun)	swamp maple (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