geek vs eccentric

geek and eccentric both are nouns.

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

As nouns, geek and eccentric are synonyms defined as:

Other synonyms of geek include eccentric person, flake, oddball.

geek (noun)	eccentric (noun)
a person with an unusual or odd personality	a person with an unusual or odd personality
a carnival performer who does disgusting acts	a person of a specified kind (usually with many eccentricities)

geek (adjective)	eccentric (adjective)
	not having a common center; not concentric
	conspicuously or grossly unconventional or unusual

geek (verb)	eccentric (verb)
to be intoxicated