area

noun

1. a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)"it was a mountainous area"
2. a subject of study"it was his area of specialization"
3. a part of an animal that has a special function or is supplied by a given artery or nerve"in the abdominal region"
4. a particular environment or walk of life"his social sphere is limited"
5. a part of a structure having some specific characteristic or function"the spacious cooking area provided plenty of room for servants"
6. the extent of a 2-dimensional surface enclosed within a boundary"the area of a rectangle"