Real estate signs are a common sight in many neighborhoods. They come in a variety of shapes and sizes, but all have the same purpose: to advertise a property for sale or rent. The most common real estate signs are 'SOLD' (4 letters), 'TOLET' (5 letters), and 'FORSALE' (7 letters). 'SOLD' indicates that the property has been SOLD, while 'TOLET' and 'FORSALE' indicate that the property is available for rent or sale, respectively.