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.
Essentially, the new waiver -- called the provisional or stateside waiver -- allows immediate relatives of U.S. citizens to apply for a waiver of the three- and ten-year bars for unlawful presence before leaving the U.S. instead of after leaving to attend their consular interview.