- financial instrument that shows ownership, such as an equity item (e.g., stock), debt instrument (e.g., bond, note), or right (e.g., option).
 - collateral in support of debt. An example is real estate that serves as security for a bank loan.
 
Finance:Certificate evidencing ownership of equity (stock), ownership of a debt obligation payable (bond), and the rights to ownership implied by options and warrants. Securities, when pledged as collateral, may be used to obtain bank financing.
Finance: collateral offered by a debtor to a lender to secure a loan, called collateral security.
Investment:  instrument that signifies an ownership position in a corporation (a  stock), a creditor relationship with a corporation or governmental body (a  bond), or other ownership rights.
Finance: collateral offered by a debtor to a lender to secure a loan called collateral security. For instance, the security behind a mortgage loan is the real estate being purchased with the proceeds of the loan. If the debt is not repaid, the lender may seize the security and resell it.
Personal security refers to one person or firm's  guarantee of another's primary obligation.
Investment: instrument that signifies an ownership position in a corporation (a stock), a creditor relationship with a corporation or governmental body (a bond), or rights to ownership such as those represented by an  option,  subscription right, and  subscription warrant.
property that serves as collateral for a debt.
Example: real estate serves as security for a mortgage loan. In the event of default on the loan, the lender may sell the property to satisfy the debt.a document that serves as evidence of ownership.
Examples: The following are securities:- common and preferred stocks
 - bonds
 - mortgages
 
The Securities and Exchange Commission defines limited partnership interests and condominiums and cooperatives in certain situations as securities.

