Cardiopulmonary resuscitation (CPR) is a lifesaving technique used to revive a person who has suffered a cardiac arrest. CPR involves compressions of the chest to circulate oxygenated blood to the vital organs. However, the term CPR can be replaced by other synonyms such as chest compressions, cardiorespiratory resuscitation, rescue breathing, or cardiac massage. These terms are often used interchangeably with CPR and are critical in emergency response situations. Thus, it is essential to master these synonyms when learning or teaching CPR techniques. Knowing these synonyms will help in describing the procedure accurately, increasing the chances of saving a person's life in an emergency.