pussy willow vs goat willow

pussy willow and goat willow both are nouns.

Word	Noun	Adjective	Verb	Adverb
pussy willow	Yes	No	No	No
goat willow	Yes	No	No	No

As nouns, pussy willow and goat willow are synonyms defined as:

pussy willow and goat willow: much-branched Old World willow having large catkins and relatively large broad leaves

Other synonyms of pussy willow include florist's willow, Salix caprea.

pussy willow (noun)	goat willow (noun)
small willow of eastern North America having greyish leaves and silky catkins that come before the leaves	much-branched Old World willow having large catkins and relatively large broad leaves
much-branched Old World willow having large catkins and relatively large broad leaves