Affect:
verb -> to influence
noun -> In ordinary daily language, it's not a noun. But technically, it's the conscious subjective aspect of an emotion considered apart from bodily changes (Merriam-Webster).
Correct usage in sentences:
He intends to effect a change to his vocabulary.
What is the effect of using words improperly?
Our usage of words is affected by our upbringing.
Reading this will affect her use of the two words.
There are more meanings to the above two terms, but they do not affect the current discussion.
__________________
Proud Citizen of the Civ 3 Demo Game
Retired Justice of the Court, Staff member of the War Academy, Staff member of the Machiavelli Institute Join the Civ 3 Demo Game $Mini-Game! ~ Play the Civ 3 Demo Game $Mini-Game! Voici mon secret. Il est très simple: on ne voit bien qu'avec le coeur. L'essentiel est invisible pour les yeux.
__________________
The difference between industrial society and information society:
In an industrial society you take a shower when you have come home from work.
In an information society you take a shower before leaving for work.