- oddity, oddness - eccentricity that is not easily explained
--1 is a kind of eccentricity
- oddity, queerness, quirk, quirkiness, crotchet - a strange attitude or habit
--2 is a kind of unfamiliarity, strangeness
- curio, curiosity, oddity, oddment, peculiarity, rarity - something unusual
--3 is a kind of object, physical object
--3 has particulars:bric-a-brac, knickknack, nicknack, knickknackery, whatnot; collectible, collectable; collector's item, showpiece, piece de resistance