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