General terms:
* Protrude: This is the most formal and neutral term, meaning to extend outward from a surface.
* Stick out: This is a more informal and common term, often used in casual conversation.
* Extend: This implies a longer and more deliberate projection.
* Project: This suggests a more forceful or prominent protrusion.
More specific terms:
* Bulge: This implies a rounded protrusion, like a bulge in a muscle.
* Jut: This refers to a sharp or sudden protrusion, like a jutting rock.
* Stick up: This is often used to describe something that stands vertically, like a finger sticking up.
* Protrusion: This is a noun form, referring to the act of sticking out or the thing that sticks out.
The best word to use depends on the specific context and the intended meaning.