Bone is formed by type I collagen fibers, ground substance, and hydroxyapatite crystals. The collagen is oriented in a layered or lamellar fashion. It can be parallel (trabecular bone and periosteum) or concentric (Haversian system). When bone is formed quickly, as in a healing fracture site, metabolic bone disease, or tumor, the collagen is randomly oriented and is called woven bone.Compact bone is the dense calcified external pa of the bone. It is lamellar bone.Cancellous , spongy and trabecular bone are all synonymous terms for the thinner network of bone within the coex. These are also lamellar bone. Ref:Color Atlas of Cytology, Histology, and Microscopic Anatomy by Wolfgang Kuhnel