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
競走【きょうそう】
race, run, dash, sprint
競売【きょうばい】
auction
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