Interfluve is a rarely used term that refers to a geographical region lying between two watercourses. Among its synonyms are the words "watershed," "water divide," "water parting," "drainage basin," and "catchment area." Use of these terms varies depending on the specific context but ultimately, they all refer to a similar concept of the area of land that separates one river system from another. Other related terms that could be used interchangeably with "interfluve" include "river basin," "stream catchment," "watershed basin," and "rainwater basin." Understanding these synonyms can help readers navigate information and descriptions of different geographies.