Definition of area:
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"
a subject of study; "it was his area of specialization"; "areas of interest include..."
a part of an animal that has a special function or is supplied by a given artery or nerve; "in the abdominal region"
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"
a part of a structure having some specific characteristic or function; "the spacious cooking area provided plenty of room for servants"
the extent of a 2-dimensional surface enclosed within a boundary; "the area of a rectangle"; "it was about 500 square feet in area"