Bone and cartilage are types of connective tissues in the body. A bone is hard tissue that forms the skeletal structure of the body. Cartilage, by comparison, is not as hard and rigid as bone, and is present in areas of the body like the ear, nose, and joints.
A waiver is the voluntary relinquishment or surrender of some known right or privilege. Regulatory agencies or governments may issue waivers to exempt companies from certain regulations. For example, a United States law restricted the size of banks, but when banks exceeded these sizes, they obtained waivers.
As a substitute for personal service by a process server, some jurisdictions may allow voluntary acceptance of service, also called waiver of service. It means that the served party agrees to voluntarily acknowledge receipt of the complaint or petition without the need to engage a process server.