trousering vs fabric

trousering and fabric both are nouns.

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

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

trousering: any fabric used to make trousers
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of trousering include cloth, material, textile.

trousering (noun)	fabric (noun)
any fabric used to make trousers	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
	the underlying structure