purple willow vs red willow

purple willow and red willow both are nouns.

Word	Noun	Adjective	Verb	Adverb
purple willow	Yes	No	No	No
red willow	Yes	No	No	No

As nouns, purple willow and red willow are synonyms defined as:

purple willow and red willow: Eurasian osier having reddish or purple twigs and bark rich in tannin

Other synonyms of purple willow include basket willow, purple osier, red osier, Salix purpurea.

purple willow (noun)	red willow (noun)
Eurasian osier having reddish or purple twigs and bark rich in tannin	Eurasian osier having reddish or purple twigs and bark rich in tannin