The crossword solution for the term COUNTERPART OF OWN is RENT, which is a four-letter word. RENT is a payment made by a tenant to a landlord in exchange for the use of land, a building, an apartment, or other property. It is usually paid on a monthly basis and is typically calculated as a percentage of the property's value. RENT is an important source of income for landlords and is often used to cover the costs of maintaining and improving the property.