Competence

n.
  1. The state of being competent; fitness; ability; adequacy; power.
  2. Property or means sufficient for the necessaries and conveniences of life; sufficiency without excess.
  3. the quality of being adequately or well qualified physically and intellectually, especially possession of the skill and knowledge required (for a task).
    1. Legal capacity or qualifications; fitness; as, the competency of a witness or of a evidence.
    2. Right or authority; legal power or capacity to take cognizance of a cause; as, the competence of a judge or court.