discernment

Short definition from Wiktionary

Noun

1. 1
   The ability to distinguish; judgement.
2. 2
   The act of distinguishing between things.
3. 3
   The ability to distinguish between things.
4. 4
   The ability to perceive differences that exist.
5. 5
   The condition of understanding.
6. 6
   Aesthetic discrimination; taste, appreciation.
7. 7
   Perceptiveness.
8. 8
   The ability to make wise judgements; sagacity.
9. 9
   Discretion in judging objectively.