An air purifier is an essential device that helps to keep the air around us clean and healthy. However, there are many different terms and phrases that can be used to describe this type of device. For example, some people might refer to it as an air cleaner, while others might use terms like air filtration system or air sanitizer. Additionally, depending on the specific brand or model, the device could be referred to as an ionizer, a HEPA filter, or an ozone generator. Despite these variations in terminology, they all serve the same purpose of helping to remove pollutants and contaminants from the air we breathe.