A football field, a parking lot and a living room floor are each an example of an area.
A farming area; the New York area.
A landing area; a playing area.
A storage area in the basement.
Studies in the area of finance; a job in the health-care area.
Dining area, play area, commercial area.
The plans are a bit vague in that area. My guts are a bit sore in that area.