florist's willow vs pussy willow

florist's willow and pussy willow both are nouns.

Word	Noun	Adjective	Verb	Adverb
florist's willow	Yes	No	No	No
pussy willow	Yes	No	No	No

As nouns, florist's willow and pussy willow are synonyms defined as:

florist's willow and pussy willow: much-branched Old World willow having large catkins and relatively large broad leaves

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

florist's willow (noun)	pussy willow (noun)
much-branched Old World willow having large catkins and relatively large broad leaves	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