viscose vs viscose rayon

viscose and viscose rayon both are nouns.

Word	Noun	Adjective	Verb	Adverb
viscose	Yes	No	No	No
viscose rayon	Yes	No	No	No

As nouns, viscose and viscose rayon are synonyms defined as:

viscose and viscose rayon: a rayon fabric made from viscose (cellulose xanthate) fibers

viscose (noun)	viscose rayon (noun)
a rayon fabric made from viscose (cellulose xanthate) fibers	a rayon fabric made from viscose (cellulose xanthate) fibers
a cellulose ester obtained by treating cellulose with caustic soda