SuaviloquyToday’s word

causation

Causation, n.

The act of causing; also the act or agency by which an effect is produced. The kind of causation by which vision is produced. Whewell. Law of universal causation, the theoretical or asserted law that every event or phenomenon results from, or is the sequel of, some previous event or phenomenon, which being present, the other is certain to take place.

Shades of meaning

Fernald has no entry of its own for causation; he lists it under cause.

Where he writes about it:

Causality is the doctrine or principle of causes, causation the action or working of causes. — from cause