The Japanese noun '社債 (しゃさい)' refers to 'corporate bonds', which are debt securities issued by corporations to raise capital. Investors who purchase these bonds lend money to the company in exchange for periodic interest payments and the return of the principal amount at maturity. This term is commonly used in financial and business contexts. For example: The company issued corporate bonds「その会社は社債を発行した」(そのかいしゃはしゃさいをはっこうした). Investing in corporate bonds can be profitable「社債への投資は利益をもたらすことがある」(しゃさいへのとうしはりえきをもたらすことがある).