Acer macrophyllum vs big-leaf maple

Acer macrophyllum and big-leaf maple both are nouns.

Word	Noun	Adjective	Verb	Adverb
Acer macrophyllum	Yes	No	No	No
big-leaf maple	Yes	No	No	No

As nouns, Acer macrophyllum and big-leaf maple are synonyms defined as:

Acer macrophyllum and big-leaf maple: maple of western North America having large 5-lobed leaves orange in autumn

Other synonyms of Acer macrophyllum include Oregon maple.

Acer macrophyllum (noun)	big-leaf maple (noun)
maple of western North America having large 5-lobed leaves orange in autumn	maple of western North America having large 5-lobed leaves orange in autumn