The Epstein-Barr Virus (EBV) is a common virus that can cause several illnesses, including mono and certain types of cancer. There are several synonyms and alternative names for EBV, including human herpesvirus 4 (HHV-4), glandular fever, infectious mononucleosis (mono), and kissing disease. These terms are often used interchangeably when discussing the virus and its associated health conditions. It is essential to know the different names and synonyms for EBV, especially when researching or seeking treatment for its related illnesses. Being aware of each term for the virus will enable individuals to receive accurate diagnoses and appropriate treatment.