geek vs crackpot

geek and crackpot both are nouns.

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

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

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

geek (noun)	crackpot (noun)
a person with an unusual or odd personality	a whimsically eccentric person
a carnival performer who does disgusting acts

geek (verb)	crackpot (verb)
to be intoxicated