The term 'low area' can be described by four different crossword solutions: LEA (3 letters), SWALE (5 letters), VALE (4 letters), and DALE (4 letters). LEA is an Old English word for a grassy meadow or pasture, while SWALE is a low-lying tract of land that is usually wet or marshy. VALE is a valley, typically one that is long and wide, while DALE is a valley in northern England. All of these terms refer to a low area, such as a valley, meadow, or marsh.