oddity vs oddment

oddity and oddment both are nouns.

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

As nouns, oddity and oddment are synonyms defined as:

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

oddity (noun)	oddment (noun)
something unusual -- perhaps worthy of collecting	a piece of cloth that is left over after the rest has been used or sold
a strange attitude or habit	something unusual -- perhaps worthy of collecting
eccentricity that is not easily explained