競べ[kurabe] contest
駅伝競走[ekidenkyousou] long-distance relay race
価格競争[kakakukyousou] price competition
競う[kisou] to compete with
競る[seru] to compete

競泳[kyouei] swimming race
競演[kyouen] recital contest
競技[kyougi] game
競技者[kyougisha] competitor
競合[kyougou] contention

一口商い[hitokuchiakinai] an immediate definite deal
一文商い[ichimonakinai] (a) penny store
卸し商[oroshishou] wholesaler
華商[kashou] Chinese merchants abroad
画商[gashou] picture dealer

会商[kaishou] negotiation
海商法[kaishouhou] maritime law
関連商品[kanrenshouhin] related product
客商売[kyakushoubai] hotel
巨商[kyoshou] wealthy merchant