oddity vs peculiarity

oddity and peculiarity both are nouns.

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

As nouns, oddity and peculiarity are synonyms defined as:

oddity and peculiarity: something unusual -- perhaps worthy of collecting

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

oddity (noun)	peculiarity (noun)
something unusual -- perhaps worthy of collecting	something unusual -- perhaps worthy of collecting
a strange attitude or habit	a distinguishing trait
eccentricity that is not easily explained	an odd or unusual characteristic