The term "vapor-liquid separator" refers to a device used to separate a mixture of vapor and liquid into its individual components. However, there are other phrases that could be used to describe this type of equipment. One synonym is "mist eliminator," which is commonly used in the chemical processing industry. Another alternative term is "demister," which is also frequently used in industrial applications. Other potential synonyms include "separation vessel," "gas-liquid separator," and "condensate separator." Ultimately, the choice of terminology depends on the specific industry and context in which the device is being used.