競技【きょうぎ】
game, match, contest
競争【きょうそう】
competition, contest, rivalry, race, competition (between organisms or species)
競馬【けいば】
horse racing
競る【せる】
to compete, to bid, to sell at auction
競売【きょうばい】
auction
競走【きょうそう】
race, run, dash, sprint
競輪【けいりん】
keirin, cycle racing event, usu. 2 km with a paced start and sprint finish
競泳【きょうえい】
competitive swimming, swimming race
競う【きそう】
to compete, to contend, to vie, to contest