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