Housetops is a term used to refer to the roofs of houses. It is a combination of two words, 'HOUSE' and 'TOPS, ' which together describe the highest point of a HOUSE. Housetops are typically made of materials such as asphalt shingles, metal, or tile, and they provide protection from the elements. They also provide insulation and can be used to collect rainwater. The term 'roofs' is often used interchangeably with 'housetops, ' as they both refer to the same structure.