A mortgage is just a type of loan taken out to buy property.

 
The important things that differentiates mortgages from other loans is that if the mortgage-holder fails to make repayments the lender can obtain possession of the property and then sell it to recoup its money.

For anyone that wants to get the best value mortgage the key things to look out for are the interest rate and fees.
 
The interest rate will determine how much interest the mortgage holder will have to pay back on the loan.