Effect may refer to:
"Economics is a study of cause and effect relationships in an economy."
"Each new generation born is in effect an invasion of civilization by little barbarians, who must be civilized before it is too late."
"The proper utilization of our intelligence and knowledge is to effect changes from within to develop a good heart."
"The right word may be effective, but no word was ever as effective as a rightly timed pause."
"Competition does a much more effective job than government at protecting consumers."