sage willow vs willow tree

sage willow and willow tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
sage willow	Yes	No	No	No
willow tree	Yes	No	No	No

As nouns, willow tree is a hypernym of sage willow; that is, willow tree is a word with a broader meaning than sage willow:

Other hypernyms of sage willow include willow.

As nouns, willow tree is a hypernym of sage willow; that is, willow tree is a word with a broader meaning than sage willow:

sage willow: willow shrub of dry places in the eastern United States having long narrow leaves canescent beneath
willow tree: any of numerous deciduous trees and shrubs of the genus Salix

Other hypernyms of sage willow include willow.

sage willow (noun)	willow tree (noun)
North American shrub with whitish canescent leaves	any of numerous deciduous trees and shrubs of the genus Salix
willow shrub of dry places in the eastern United States having long narrow leaves canescent beneath