ash-leaved maple vs box elder

ash-leaved maple and box elder both are nouns.

Word	Noun	Adjective	Verb	Adverb
ash-leaved maple	Yes	No	No	No
box elder	Yes	No	No	No

As nouns, ash-leaved maple and box elder are synonyms defined as:

ash-leaved maple and box elder: common shade tree of eastern and central United States

Other synonyms of ash-leaved maple include Acer negundo.

ash-leaved maple (noun)	box elder (noun)
common shade tree of eastern and central United States	common shade tree of eastern and central United States