Annuity bond refers to a type of bond that is issued by a company, government or organization, which generates regular interest payments to the bondholder over a fixed period of time. Synonyms for annuity bond include income bond, revenue bond, and profit bond. Income bond is issued by companies who are not financially strong enough to provide fixed interest payments to their bondholders, and instead offer payments based on their earnings. Revenue bond is issued by government agencies and backed by revenue generated from specific projects such as toll roads and airports. Profit bond is issued by companies where the return on investment is based on the company's profits instead of fixed interest rates.