Yes, area is a Scrabble word!

Noun

1. A particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)

2. A subject of study

3. A part of an animal that has a special function or is supplied by a given artery or nerve

4. A particular environment or walk of life

5. A part of a structure having some specific characteristic or function

6. The extent of a 2-dimensional surface enclosed within a boundary