http://www.causality.inf.ethz.ch/images/cause-effect.gif
cause
noun
[ˈkɑːz]
- something or someone that produces an effect, result, or condition : something or someone that makes something happen or exist —often + of
- a reason for doing or feeling something —often + for
- something (such as an organization, belief, idea, or goal) that a group or people support or fight for