sacking vs fabric

sacking and fabric both are nouns.

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

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

sacking: coarse fabric used for bags or sacks
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of sacking include cloth, material, textile.

sacking (noun)	fabric (noun)
the termination of someone's employment (leaving them free to depart)	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
coarse fabric used for bags or sacks	the underlying structure