The Genus Schistosoma is a parasitic flatworm that is commonly known as a blood-fluke, which is responsible for causing schistosomiasis or bilharzia. Although there are only a few species in the genus Schistosoma, there are several synonyms that are used in the scientific literature to describe them. These synonyms include Bilharzia, Endocotyle, Schistoma, Schistoxenos, and Bilharziella. These terms are often used interchangeably to refer to the members of the genus Schistosoma. However, it is important to note that these synonyms may have different meanings depending on the context in which they are used. Regardless, the Genus Schistosoma is a significant public health concern worldwide, with millions of people affected by schistosomiasis every year.