Term: premium bond: a government bond that bears no interest or capital gains but enters the holder into lotteries
Broader: bond: a certificate of debt (usually interest-bearing or discounted) that is issued by a government or corporation in order to raise money; the issuer is required to pay a fixed sum annually until maturity and then a fixed sum to repay the principal | Unrelated: wall germander: European perennial subshrub with red-purple or bright rose flowers with red and white spots