Macadams, also known as macadamized roads, are constructed with layers of small broken stones compacted together with a binding material such as tar or asphalt. While the term "macadams" is commonly used to refer to these types of roads, there are several other synonyms that describe the same thing. Some of these synonyms include tarmacadam, bitumen macadam, asphaltic concrete, and tar-surfaced road. Each of these terms describes the same type of road construction method, varying only slightly in the materials used. However, regardless of the term used, macadamized roads provide a durable surface that is resistant to wear and tear, making them a popular choice for highways, driveways, and parking lots.