nut vs nutty

nut is a noun but nutty is not a noun.

Word	Noun	Adjective	Verb	Adverb
nut	Yes	No	Yes	No
nutty	No	Yes	No	No

nut (noun)	nutty (noun)
a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
one of the two male reproductive glands that produce spermatozoa and secrete androgens
someone who is so ardently devoted to something that it resembles an addiction
a whimsically eccentric person
usually large hard-shelled seed
half the width of an em

nut (adjective)	nutty (adjective)
	informal or slang terms for mentally irregular
	having the flavor of nuts

nut (verb)	nutty (verb)
gather nuts