silk vs cloth

silk and cloth both are nouns.

Word	Noun	Adjective	Verb	Adverb
silk	Yes	No	No	No
cloth	Yes	No	No	No

As nouns, cloth is a hypernym of silk; that is, cloth is a word with a broader meaning than silk:

silk: a fabric made from the fine threads produced by certain insect larvae
cloth: artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers

Other hypernyms of silk include fabric, material, textile.

silk (noun)	cloth (noun)
a fabric made from the fine threads produced by certain insect larvae	artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers
animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders