How to move an object along its X axis

Ok, so I know that “transform.forward” moves an object along its Z axis, and “transform.up” along its Y, but what do I type to move an object along its X axis?

transform.right

Or use Vector3(x,y,z).

These are simply directions though and do not themselves perform movement.

function Update() {
// Move the object to the right relative to the camera 1 unit/second.
transform.Translate(Time.deltaTime, 0, 0, Camera.main.transform);
}