curiosity vs peculiarity

curiosity and peculiarity both are nouns.

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

As nouns, curiosity and peculiarity are synonyms defined as:

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

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

curiosity (noun)	peculiarity (noun)
something unusual -- perhaps worthy of collecting	something unusual -- perhaps worthy of collecting
a state in which you want to learn more about something	a distinguishing trait
	an odd or unusual characteristic