• Language proficiency
  Language proficiency
  Language proficiency or linguistic proficiency is the ability of an individual to speak or perform in an acquired language. As theories vary among pedagogues as to what constitutes proficiency, there is little consistency as to how different organizations classify it...
  
  , the ability of an individual to speak or perform in an acquired language
• Expertise
• Skill
  Skill
  A skill is the learned capacity to carry out pre-determined results often with the minimum outlay of time, energy, or both. Skills can often be divided into domain-general and domain-specific skills...
  
  , the learned capacity to carry out pre-determined results often with the minimum outlay of time, energy, or both

See also

• Efficiency (disambiguation)
  Efficiency (disambiguation)
  Efficiency is the extent to which time or effort is well used for the intended task or purpose.Efficiency may also refer to:* Efficiency or Studio apartment, a one-room apartment* A measure of goodness for a statistical estimator....
  
  
• Progress (disambiguation)
• Profit (disambiguation)
  Profit (disambiguation)
  Profit may refer to:* Profit , the difference between the purchase price and the costs of bringing to market* Profit , has two related but distinct meanings: Normal profit and Economic profit...
  
  
• Test (disambiguation)