Loan can be taken against any security ie against land,
building, machinery, or against debtors or stock

loan providing by receiveing certain security like 
certificate of document,any fixed assets, stock, share.

when u r purchasing a loan at tht time u need to provide 
security for the borrowed amt which will be secured.

Secured Loans are the loans for which the creadit risk 
mitigation is done in adavance. E.g., if a loan worth Rs. 
100 is secured against some asset like land building, etc. 
the risk of default is low because the loan is covered 
againest some asset.