A storm window, also known as a protective window, is a type of window panel used to protect a primary window from damage caused by severe weather conditions. Other synonyms for a storm window include hurricane window, weatherproof window, and storm shield. These alternatives serve the same purpose as a storm window and are designed to prevent water infiltration, wind damage, and debris impact. Some other options for storm windows include impact-resistant windows, storm-resistant doors, and hurricane shutters. No matter which type of storm window or protective shield is used, it's important to keep the homeowner safe and secure during a severe weather event.