jerky vs foolish

jerky is a noun but foolish is not a noun.

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

As adjectives, jerky and foolish are synonyms defined as:

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

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

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