Bonds are basically a way for companies & governments for issuing capital for expansion, infrastructural projects, etc. By issuing bonds to the public, the organizations & Government can raise money for their projects. In simple terms bonds are like a loan for which you are the lender. The organization who sells the bonds is known as issuer & the holder is called as an investor. The bonds usually have a defined term or maturity, upon which the bonds can be redeemed.