This is because it is purchased for specific amounts of time such as ten years, 20 years, or 30 years. (goodfinancialcents.com)
They are comparable as you are lending money for specific amount of time and receiving a payment in return. (brickbybrickinvesting.com)
A lease option is a contract between the owner of home and the tenant / buyer that gives the tenant the option to purchase the property for a certain agreed price in specific amount of time. (foreclosureuniversity.com)