AC (Air Conditioned):

• Indicates that a space or vehicle is equipped with an air conditioning system.
• Air conditioning cools the air, reducing temperature and often humidity.
• Examples include AC rooms, AC buses, AC trains, and AC cars.

Non-AC (Non-Air Conditioned):

• Indicates that a space or vehicle does not have an air conditioning system.
• Relies on natural ventilation (windows, fans) for cooling.
• Examples include non-AC rooms, non-AC buses, and non-AC trains.