Oregon maple vs big-leaf maple

Oregon maple and big-leaf maple both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oregon maple	Yes	No	No	No
big-leaf maple	Yes	No	No	No

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

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

Other synonyms of Oregon maple include Acer macrophyllum.

Oregon maple (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