foolish vs jerky

foolish is not a noun while jerky is a noun.

Word	Noun	Adjective	Verb	Adverb
foolish	No	Yes	No	No
jerky	Yes	Yes	No	No

As adjectives, foolish and jerky are synonyms defined as:

Other synonyms of foolish include anserine, dopey, dopy, gooselike, goosey, goosy.

foolish (noun)	jerky (noun)
	meat (especially beef) cut in strips and dried in the sun

foolish (adjective)	jerky (adjective)
devoid of good sense or judgment	having or revealing stupidity
having or revealing stupidity	marked by abrupt transitions
	lacking a steady rhythm