compartment

noun
  1. A separate section or part of a structure or container, often used to store or organize items. noun
    The suitcase has several compartments for easy organization.
    He kept his tools in a special compartment in the garage.
  2. A division of a space or area, often used to isolate or separate different sections. noun
    The train had a sleeping compartment for long-distance travelers.
    The refrigerator has a separate compartment for vegetables.
  3. A section of a larger entity that is distinct in function or purpose. noun
    The brain is divided into several compartments, each responsible for different functions.
    The ship's hull was divided into watertight compartments to prevent sinking.