swamp maple vs scarlet maple

swamp maple and scarlet maple both are nouns.

Word	Noun	Adjective	Verb	Adverb
swamp maple	Yes	No	No	No
scarlet maple	Yes	No	No	No

As nouns, swamp maple and scarlet maple are synonyms defined as:

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

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

swamp maple (noun)	scarlet 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