Hydrological is a term used to describe anything related to the scientific study of water and its properties. There are several synonyms for this commonly used word, including hydrologic, hydrometeorological, and water cycle. These synonyms are often used interchangeably, depending on the context of the discussion, but all refer to key aspects of water, such as its quantity, quality, and movement. Hydrologic focuses on the study of the dynamics of water in the earth's surface, while hydrometeorological concerns with the relationship between the hydrological cycle and meteorological processes. Water cycle, on the other hand, describes the continuous movement of water between the earth's surface and the atmosphere.