The grantor of the loan would be the person giving you the loan.
For example when you apply for a loan such as at a bank then you go through an approval process then if you're approved the bank president would be the grantor or the bank owner would be the grantor of the loan.
They grant you the money on the loan and you the borrower would be the grantee.
Also for real estate when you buy a house and you pay the house off and get the deed in your name then you also would be the grantee and the bank who then transfers ownership to you would be the grantor.
Or if you buy a house from an individual without a mortgage and pay cash and they transfer the deed to you the owner would be the grantor while the buyer which is you would be the grantee.
A grantee is the person who gets ownership of the property transferred to them from the grantor.