- Facet – A small articular surface.
- Fovea – An articular surface in the form of a very small pit/depression.
- Fossa – A concavity or depression, which is moderately deep.
- Tubercle – A small blunt projection which, if more developed is called a tuberosity while a trochanter is the largest of these.
- Tuberosity – A large rounded uneven projection.
- Trochanter – A very large non articular prominence.
- Head – A rounded articular enlargement at the proximal end of a bone.
- Neck – The constricted part below the head.
- Groove / Sulcus – An elongated Depression or concavity between parallel ridges.
- Incisura – A notch like depression.
- Condyle – A somewhat cylindrical articular surface or knuckle shaped paired articular surface
- Epicondyle – A non-articular projection in connection with or adjacent to condyle.
- Trochlea – A pulley like grooved articular surface.
- Process – A large projection
- Spine – A pointed projection.
- Cornu or hamulus – A curved horn like process.
- Crest – An elongated elevation or A sharp ridge
- Line – A faint elongated elevation.
- Linea – Narrow crest/ridge/line i.e. A very small line
- Foramen – A perforation or hole through a bone for the transmission of vessels, nerves etc.
- Cleft – A fissure in a bone.
- Lamina – A thin plate of a bone.
- Border – The edge of bone usually applied to flat bone.
- Angle – Corner of bone found between two borders.
- Body (corpus) – The largest/principal part of a bone.
- Protuberance, prominence, eminence, torus – A varieties of bony projections.
- Eminence – A relatively small projection or bump.
- Glenoid cavity – A shallow cup-like articular depression
- Cotyloid cavity – A deep cup like articular depression
- Condyloid cavity/Acetabulum – A deeper articular depression.
- Sinus – An air cavity within the bone lined by mucous membrane and communicates with the exterior.
- Hiatus – A depression leading to two or more foramina.
- Canal – A bony tunnel (foramen of some length) or A long, tunnel-like foramen, usually a passage for notable nerves or blood vessels.
- Meatus – A narrow passage.
- Articular process – A projection that contacts an adjacent bone.
- Articulation – The region where adjacent bones contact each other—a joint
- Suture – Articulation between cranial bones.
- Labyrinth – A cavity within a bone.
- Mamus – An arm-like branch off the body of a bone.
- Fontanel – Unossified region between skull bone.
- Manubrium – A flat handle like projection
- Notch – A deep or large indentation usually for articulation.
- Squama – The flat portion of the cranial bone.
- Styloid – Literally a pencil shaped pointed process
Symphysis – A union in which two similar bones are firmly connected by cartilage
