velvet osier vs common osier

velvet osier and common osier both are nouns.

Word	Noun	Adjective	Verb	Adverb
velvet osier	Yes	No	No	No
common osier	Yes	No	No	No

As nouns, velvet osier and common osier are synonyms defined as:

velvet osier and common osier: willow with long flexible twigs used in basketry

Other synonyms of velvet osier include hemp willow, Salix viminalis.

velvet osier (noun)	common osier (noun)
willow with long flexible twigs used in basketry	willow with long flexible twigs used in basketry