Sidewalls are commonly used exterior components of buildings that help to provide structural support and protection from the external environment. There are many synonyms for the word sidewalls that can be used interchangeably depending on the context of the sentence. Some common synonyms include side panels, exterior walls, wall panels, cladding, siding, and facades. Other synonyms include partition walls, dividing walls, and boundary walls. Each of these synonyms has a slightly different connotation and refers to a specific aspect of the building structure. Regardless of the synonym used, sidewalls play an essential role in protecting and defining the boundaries of a building.