Under the concept of causality, we assume that there is an <em>interdependence</em> between cause and effect, where cause precedes effect in <em>time order</em>.
Cause and effect are seen as two variables, in constant <em>correlation</em>, hence being called a cause-effect relationship.
A cause is a sort of an explanation, while the effect is the result. The connection between cause and effect can also be referred to as causal effect or causation.