area in WordNet English dictionary

1. a part of a structure having some specific characteristic or function
   "the spacious cooking area provided plenty of room for servants"
   area 
   
2. the extent of a 2-dimensional surface enclosed within a boundary
   "the area of a rectangle"; "it was about 500 square feet in area"
   area  expanse  surface area 
   
3. a part of an animal that has a special function or is supplied by a given artery or nerve
   "in the abdominal region"
   area  region 
   
4. a subject of study
   "it was his area of specialization"; "areas of interest include..."
   area 
   
5. 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"; "Bible country"
   area  country 
   
6. a particular environment or walk of life
   "his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"
   sphere  domain  area  orbit  field  arena