NOTES AND ACCOUNTS RECEIVABLE 
A secured or unsecured receivable evidenced by a note or open account arising from activities involving liquidation and disposal of loan collateral. Notes and accounts receivable can and often are bought and sold through note brokers who are paid a commission for listing the notes and arranging the sale.  

MORTGAGE
An instrument giving legal title to secure the repayment of a loan made by the mortgagee (lender). In legal contemplation there are two types: (1) title theory - operates as a transfer of the legal title of the property to the mortgagee, and (2) lien theory - creates a lien upon the property in favor of the mortgagee. A mortgage can be sold to a third party often through a mortgage broker.