felt vs fabric

felt and fabric both are nouns.

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

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

felt: a fabric made of compressed matted animal fibers
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of felt include cloth, material, textile.

felt (noun)	fabric (noun)
a fabric made of compressed matted animal fibers	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
	the underlying structure

felt (verb)	fabric (verb)
change texture so as to become matted and felt-like
cover with felt
mat together and make felt-like