The pneumococcal conjugate vaccine, also known as PCV, is a type of vaccine that protects against pneumococcal diseases such as pneumonia, meningitis, and bloodstream infections. There are various synonyms for the term that can be used interchangeably. Some common examples include PCV13, Prevnar, and Prevnar 13. These synonyms are commonly used in medical literature, discussions, and prescriptions. Health care professionals usually use these terms to communicate with parents or caregivers of children to ensure they receive the vaccine. Synonyms make it easier to understand medical terms and ensure that people receive the necessary treatment to prevent illness and maintain healthy living.