bookcloth vs fabric

bookcloth and fabric both are nouns.

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

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

bookcloth: a woven fabric (usually cotton) used for book covers.
fabric: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of bookcloth include cloth, material, textile.

bookcloth (noun)	fabric (noun)
a woven fabric (usually cotton) used for book covers.	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
	the underlying structure