Hematemesis is a medical condition that refers to the vomiting of blood. While there are no direct synonyms for this term per se, there are other words that are often used interchangeably to describe the same condition. These include "bloody vomit", "vomiting blood", "haematemesis" (British spelling), and "gastric bleeding". These terms are often used in medical and healthcare circles. While rare cases of hematemesis may not require medical attention, if you are experiencing this issue, it is important to seek the help of a medical professional as soon as possible. Early diagnosis and treatment can help prevent more serious complications.