ダウ平均株価[dauheikinkabuka] Dow-Jones average
株が下がる[kabugasagaru] to fall in public esteem
株が上がる[kabugaagaru] to rise in public esteem
株価[kabuka] stock prices
株券[kabuken] stock certificate

株式[kabushiki] stock (company)
株式会社[kabushikigaisha] public company
株式公開[kabushikikoukai] stock offering (to the public)
株式取引所[kabushikitorihikijo] stock exchange

歓心を買う[kanshinwokau] to win favour
競争売買[kyousoubaibai] auction
故買[kobai] buying stolen goods
購買[koubai] procurement
購買力[koubairyoku] buying power

思惑買い[omowakugai] speculative buying
衝動買い[shoudougai] impulsive buying
人身売買[jinshinbaibai] slave trade
人買い[hitokai] slave traffic
青田買い[aotagai] speculatively buying a rice harvest, while the fields are still green