ACP (Aluminium Composite Panel) and ACM (Aluminium Composite Material) cladding are terms often used interchangeably to describe a multi-layered material consisting of two aluminum cover sheets bonded to a non-aluminum core. However, ACP specifically refers to the use of such materials in cladding systems on buildings, emphasizing the application, while ACM can refer to the same material used in a broader range of applications beyond cladding, such as signage, canopies, and insulation panels. Essentially, ACP is a type of ACM with a specific use in architectural facades and exterior building features.