oddity vs curio

oddity and curio both are nouns.

Word	Noun	Adjective	Verb	Adverb
oddity	Yes	No	No	No
curio	Yes	No	No	No

As nouns, oddity and curio are synonyms defined as:

Other synonyms of oddity include curiosity, oddment, peculiarity, rarity.

oddity (noun)	curio (noun)
something unusual -- perhaps worthy of collecting	something unusual -- perhaps worthy of collecting
a strange attitude or habit
eccentricity that is not easily explained