Salix sericea vs silver willow

Salix sericea and silver willow both are nouns.

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

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

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

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

Salix sericea (noun)	silver 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