rayon vs fabric

rayon and fabric both are nouns.

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

As nouns, fabric is a hypernym of rayon; that is, fabric is a word with a broader meaning than rayon:

rayon: a synthetic silklike fabric
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of rayon include cloth, material, textile.

rayon (noun)	fabric (noun)
a synthetic silklike fabric	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
	the underlying structure