The prefix "Cor-" is derived from the Latin word "corpus", which means body. It is commonly used in medical terminology to refer to the heart, such as "coronary", "coronoid", and "cor pulmonale". However, there are several synonyms for the prefix "Cor-", including "cardio-", "myo-", and "kardia-". These prefixes are also used to indicate a relationship to the heart, such as "cardiology", "myocardium", and "kardiovasculer". In addition, there are other prefixes that can be used as synonyms for "Cor-", such as "pulmo-" and "pneumo-", which indicate a relationship to the lungs, and "cephalo-", which indicates a relationship to the head.