A camera move, in which the camera stays still, but looks up or down. Nod your head.
Go on.
You just did a tilt.
A tilt along the horizontal axis of the camera (as nodding your head) is, in some contexts, called "pitch".
Moving the camera side to side (shaking your head) is a
Pan.
A tilt along the axis of the lens (as is used to produce the
Dutch Angle) is called "roll". Featured in
2001: A Space Odyssey, and likewise parodied in
Mystery Science Theatre 3000: The Movie.
