goat willow vs florist's willow

goat willow and florist's willow both are nouns.

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

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

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

Other synonyms of goat willow include pussy willow, Salix caprea.

goat willow (noun)	florist's willow (noun)
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