interior

noun
  1. The inner or indoor part of something, especially a building; the inside. noun
    The interior of the house was beautifully decorated.
    She admired the car's luxurious leather interior.
  2. The inland part of a country or region. noun
    They traveled to the interior of the country to explore its natural beauty.
    The interior of Australia is known for its arid landscapes.
  3. Situated within or inside; relating to the inside; inner. adjective
    The interior walls were painted a soft blue.
    He focused on the interior design of the building.