| A | B |
|---|
| Process | Any projection or bump |
| Ramus | An extension of a bone making an angle to the rest of the structure |
| Trochanter | A large, rough projection |
| Tuberosity | A smaller, rough projection |
| Tubercle | A small, rounded projection |
| Crest | A prominent ridge |
| Line | A low ridge |
| Spine | A pointed process |
| Head | The expanded articular end of an epiphysis, separated from the shaft by the neck |
| Neck | A narrow connection between the epiphysis and the diaphysis |
| Condyle | A smooth, rounded articular process |
| Trochlea | A smooth, grooved articular process shaped like a pulley |
| Facet | A small, flat articular surface |
| Fossa | A shallow depression |
| Sulcus | A narrow groove |
| Foramen | A rounded passageway for blood vessels and/or nerves |
| Canal | A large-diameter passageway through the substance of a bone |
| Fissure | An elongate cleft |
| Sinus | A chamber within a bone, normally filled with air |
