Contention

n.
  1. A violent effort or struggle to obtain, or to resist, something; contest; strife.
  2. Strife in words; controversy; altercation; quarrel; dispute; as, a bone of contention.
  3. Vehemence of endeavor; eagerness; ardor; zeal.
  4. A point maintained in an argument, or a line of argument taken in its support; the subject matter of discussion or strife; a position taken or contended for.