curio vs peculiarity

curio and peculiarity both are nouns.

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

As nouns, curio and peculiarity are synonyms defined as:

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

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

curio (noun)	peculiarity (noun)
something unusual -- perhaps worthy of collecting	something unusual -- perhaps worthy of collecting
	a distinguishing trait
	an odd or unusual characteristic