What is the meaning of capability?

noun

• The quality of being capable - physically or intellectually or legally.
  • usage: "he worked to the limits of his capability"
  • synonyms: capableness
• The susceptibility of something to a particular treatment.
  • usage: "the capability of a metal to be fused"
  • synonyms: capacity
• An aptitude that may be developed.
  • synonyms: capableness, potentiality