Salix purpurea vs red osier

Salix purpurea and red osier both are nouns.

Word	Noun	Adjective	Verb	Adverb
Salix purpurea	Yes	No	No	No
red osier	Yes	No	No	No

As nouns, Salix purpurea and red osier are synonyms defined as:

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

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

Salix purpurea (noun)	red osier (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
	common North American shrub with reddish purple twigs and white flowers