The term "corps" has multiple meanings depending on its context.
In a general sense, it can refer to a group or body of people who are organized for a particular purpose such as an army unit or a volunteer organization. It is also used in the name of some organizations such as the Peace Corps which refers to an independent US government agency that sends volunteers abroad to serve in various capacities.
In academic and scientific contexts, "corps" can refer to a part of something larger, particularly when referring to specific types of organisms or structures within living things. For example, it is used in the name of certain insect orders such as Coleoptera (beetles) which refers to one of the main divisions of beetles.
In geographical terms, "corps" can refer to a body of water such as a lake or pond, particularly when referring to specific sections within larger bodies of water. For example, it is used in the name of certain lakes such as Lake Superior which refers to one of the Great Lakes located on the border between the United States and Canada.
Overall, "corps" can have different meanings depending on its context but generally refers to a group or part of something larger.