Camera direction vector in shader

What is the difference between Camera direction vector and camera vector?

Camera direction is the way the camera is facing, camera vector, is the camera position.

You have tool tips:

image

But what is Camera Position input if Camera Vector input is camera position?

Vector Material Expressions in Unreal Engine | Unreal Engine 5.2 Documentation

Looking at it again, I think that

image

is the direction vector from the pixel to the camera. It’s different for each pixel.

Whereas

image

is the location of the camera.