fustian vs fabric

fustian and fabric both are nouns.

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

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

fustian: a strong cotton and linen fabric with a slight nap
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of fustian include cloth, material, textile.

fustian (noun)	fabric (noun)
a strong cotton and linen fabric with a slight nap	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
pompous or pretentious talk or writing	the underlying structure