- peculiarity, distinctive feature, distinguishing characteristic - an odd or unusual characteristic
--1 is a kind of feature, characteristic
--1 has particulars: calling card - peculiarity, specialness, specialty, speciality, distinctiveness - a distinguishing trait
--2 is a kind of individuality, individualism, individuation
--2 has particulars: idiosyncrasy, foible, mannerism - 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