Compounds of こす

• 癇癪を起こす
  (exp) to lose one's temper
• こすり合わせる
  (v1) to rub together (e.g. one's hands)
• 勇気を奮い起こす
  (exp) to muster up one's courage
• 水力で電気を起こす
  (exp) to generate electricity by hydraulic power