Causation is an act or process of causing something, a relationship that describes and analyses cause and effect.
This is the capacity of one variable to influence another variable. The first variable bring the second into existence or may cause the incidence of the second viable to fluctuate.
A correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable. Causation indicates that one event is the result of the occurrence of the other event; i.e. there is a causal relationship between the two events.