geek vs nutter

geek and nutter both are nouns.

Word	Noun	Adjective	Verb	Adverb
geek	Yes	No	Yes	No
nutter	Yes	No	No	No

As nouns, nutter is a hyponym of geek; that is, nutter is a word with a more specific, narrower meaning than geek:

Other hyponyms of geek include crackpot, crank, fruitcake, nut, nut case, screwball, wacko, whacko.

geek (noun)	nutter (noun)
a person with an unusual or odd personality	a person who is regarded as eccentric or mad
a carnival performer who does disgusting acts

geek (verb)	nutter (verb)
to be intoxicated