affection, attribute, attribution, character, characteristic, criterion, diagnostic, differentia, feature, fingerprint, hallmark, mark, marker, note, particularity, peculiarity, point, property, quality, specific, stamp, touch

badge, indication, signemblem, symbol, tokencharm, graceexcellence, merit, virtueeccentricity, idiosyncrasy, oddity, quirkindividuality, singularity, uniqueness