Greek-English translations for γνώρισμα

• attribute
  His finest attribute is his kindness.
  In the clause "My jacket is more expensive than yours", "My" is the attribute of "jacket".
  This packet has its coherency attribute set to zero.
• trait
  The number one personality trait I hate is hypocrisy. Why cant you be consistent!?
  Traits are somewhat between an interface and a mixin