What it is
A few nodes, such as Translate Coordinates and Directional Warp, take a scalar field instead of a plain number. Plug in a number for the same value everywhere, or a density to make the value change from place to place.
Also accepts
These types plug into a Scalar field input and convert on their own:
Made by0
No node yet.
Used by2
Good to know
What plugs in
Integer, Real and Density all connect directly. Only a node group input can output one.