особенность

1) General subject: accident, characteristic, characteristical, clinical feature, distinctive, factor, flavor, flavour, habit, habitude, idiosyncrasies, indication, individualities, individuality, mannerism (присущая кому-л.), particularity, peculiar, peculiarity, point, quality, singularity, speciality, specific character, specific nature, tang, trait, trick (лица, голоса), way (it is not in his way to be communicative - общительность не в его характере), special thing about (as in "the special thing about the company is ...."), oddity, bite, idiosyncratic way, distinguishing characteristic, key element

2) Medicine: character, distinction, pattern

3) Obsolete: tincture

4) Military: distinctive feature, (характерная) feature

5) Philosophy: thisness

6) Engineering: aspect, characteristic property, detail, special feature, specialty

7) Rare: propriety

8) Mathematics: exception, (характерная) property

9) Automobile industry: unique feature (конструкции или модели)

10) Information technology: idiosyncrasy, specific feature

11) Advertising: identity

12) Patents: thing

13) Business: characteristics, nature, particular

14) Drilling: property

15) Automation: specificity

16) Quality control: (отличительная) distinction, (конструктивная) feature

17) Robots: characteristic (характерная)

18) Makarov: aroma, characteristic property (отличительное качество), characteristic property (отличительное качество, свойство), distinction (отличительное качество), distinction (отличительное качество, свойство), feature (отличительное качество), line, salient feature (отличительное качество, свойство)