Oxygen therapy, also known as supplemental oxygen, involves administering oxygen to people who have difficulties breathing due to medical conditions. There are several different terms that can be used as synonyms for oxygen therapy, including oxygen supplementation, oxygen support, oxygen treatment, and oxygen therapy treatment. All of these terms refer to the same thing, which is the delivery of oxygen via mask, nasal cannula, or other devices to improve breathing and help patients maintain healthy oxygen levels. Whether you are a healthcare provider, a patient, or a loved one of someone in need of oxygen therapy, it is important to be familiar with these terms and understand how they are used.