screwball vs geek

screwball and geek both are nouns.

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

As nouns, geek is a hypernym of screwball; that is, geek is a word with a broader meaning than screwball:

Other hypernyms of screwball include eccentric, eccentric person, flake, oddball.

screwball (noun)	geek (noun)
a pitch with reverse spin that curves toward the side of the plate from which it was thrown	a person with an unusual or odd personality
a whimsically eccentric person	a carnival performer who does disgusting acts

screwball (adjective)	geek (adjective)
foolish; totally unsound

screwball (verb)	geek (verb)
	to be intoxicated