silk vs silky

silk is a noun but silky is not a noun.

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

silk (noun)	silky (noun)
a fabric made from the fine threads produced by certain insect larvae
animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders

silk (adjective)	silky (adjective)
	having a smooth, gleaming surface reflecting light; being of a smooth, soft and lustrous quality, resembling silk