Airlock is a term used to describe a sealed chamber that is designed to prevent or control the flow of air between two areas. This term is often used in the context of spacecraft, submarines, or other areas where air pressure is critical. Some synonyms for airlock include airtight chamber, hermetic seal, pressure barrier, vacuum chamber, and decompression chamber. These terms are often used interchangeably to describe the same type of equipment or system. Regardless of the term used, airlocks are essential for maintaining proper air pressure and ventilation in critical environments, and they play a vital role in protecting the health and safety of those who use them.