serge vs fabric

serge and fabric both are nouns.

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

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

serge: a twilled woolen fabric
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of serge include cloth, material, textile.

serge (noun)	fabric (noun)
a twilled woolen fabric	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
	the underlying structure