How Debt securities is different from term loan

Debt securities are different from term loans provided by financial institutions and banks to the company. Term loans are long term debt contracts under that a borrower agrees to make a series of interest and principal payments on specific dates to the lender. Whereas this is true for debt securities also, term loans differ in one significant aspect that they are usually sold to one (or few) lenders particularly financial institutions and banks, whereas debt securities (Terms 'debentures' and 'bonds' would be used interchangeably for debt securities) are normally offered to the public.  Another vital difference is that principal repayments in term loans are made along with interest payments however in debt securities it is generally a lump sum payment at the end of period (or a series of payments).