Osteochondroma is a bone disorder that is characterized by the development of benign tumors on the surface of bones. Some of the synonyms for osteochondroma are exostosis, osteoma, and chondroma. Exostosis is a term that refers to an abnormal growth of bone tissue on the surface of a bone. Osteoma, on the other hand, is viewed as a benign tumor made up of bone tissue. Lastly, chondroma refers to a tumor that arises from cartilage cells and is characterized by the presence of nodules on bone surfaces. These terms are often used interchangeably in medical literature to refer to the same bone disorder.