Capital market instruments, also known as "securities" are:
Stocks & Bonds - Certificates of ownership stakes & loans to a company by an individual or group.
Treasury Bills - Certificates of government security that are bought at a discounted rate and redeemed for face value.
Debentures - General credit loan certificate given by a company based on its perception rather than its assets.
Foreign Exchange - The system used to handle other countries currency.
Fixed Deposits - Certificate of an institute which allows for higher interest rates if held until the maturity date.