ash-leaved maple vs maple

ash-leaved maple and maple both are nouns.

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

As nouns, maple is a hypernym of ash-leaved maple; that is, maple is a word with a broader meaning than ash-leaved maple:

ash-leaved maple: common shade tree of eastern and central United States
maple: any of numerous trees or shrubs of the genus Acer bearing winged seeds in pairs; north temperate zone

ash-leaved maple (noun)	maple (noun)
common shade tree of eastern and central United States	any of numerous trees or shrubs of the genus Acer bearing winged seeds in pairs; north temperate zone
	wood of any of various maple trees; especially the hard close-grained wood of the sugar maple; used especially for furniture and flooring