The word "vesica" is most commonly known to refer to the bladder. However, there are various other synonyms that are used to describe the same organ. Some of the commonly used synonyms for vesica include urinary bladder, urinary reservoir, cysto, and plexus vesicae. In medical terminology, the vesica is used as a prefix for many disorders and diseases related to the bladder, such as vesicoureteral reflux and vesicovaginal fistula. Understanding these medical terms and their synonym is essential for effective diagnosis and treatment of such ailments. Therefore, it is important to have a comprehensive understanding of the various synonymous terms used in medical terminology.