A mortgage occurs when an asset is pledged as collateral to secure a loan. The owner of an asset does not relinquish title, ownership, or property rights such as income derived from the asset.
Mortgages most often arise in mortgage lending, where the house serves as collateral, but the bank has no claim on the cash flows or income received from it, unless the borrower defaults.
Margin lending in brokerage accounts is another common form of mortgage lending found in securities trading and investing.