peculiarity
(noun)
noun
1. an odd or unusual characteristic
Definition categories: thought, characteristic, feature
2. a distinguishing trait
Similar word(s): distinctiveness, speciality, specialness, specialty
Definition categories: attribute, individualism, individuality, individuation
3. something unusual -- perhaps worthy of collecting
Similar word(s): curio, curiosity, oddity, oddment, rarity
Definition categories: man–made, object