silver willow vs Salix alba sericea

silver willow and Salix alba sericea both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver willow	Yes	No	No	No
Salix alba sericea	Yes	No	No	No

As nouns, silver willow and Salix alba sericea are synonyms defined as:

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

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

silver willow (noun)	Salix alba sericea (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