silver willow vs silky willow

silver willow and silky willow both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver willow	Yes	No	No	No
silky willow	Yes	No	No	No

As nouns, silver willow and silky willow are synonyms defined as:

silver willow and silky willow: North American willow with greyish silky pubescent leaves that usually blacken in drying

Other synonyms of silver willow include Salix alba sericea, Salix sericea.

silver willow (noun)	silky willow (noun)
North American willow with greyish silky pubescent leaves that usually blacken in drying	North American willow with greyish silky pubescent leaves that usually blacken in drying
	small shrubby tree of western North America (Alaska to Oregon)