#struggle.effort__battle  an energetic attempt to achieve something; "getting through the crowd was a real struggle"; "he fought a battle for recognition"
  supertype:  effort__attempt__endeavor__endeavour__try  earnest and conscientious activity intended to do or accomplish something: "made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"
  subtype:  duel  any struggle between two skillful opponents (individuals or groups)
  subtype:  scramble__scuffle  an unceremonious and disorganized struggle
  subtype:  joust__tilt  a combat between two mounted knights tilting against each other with blunted lances

No statement uses or specializes struggle.effort; click here to add one.