effect

noun:a change that is a result or consequence of an action or other cause
- The new policy had a positive effect on employee morale.
noun:the state of being operative or functional
- The new law will come into effect next month.
noun:the impression or feeling created by something
- The lighting created a calming effect in the room.
verb:to cause something to happen; to bring about
- The new manager hopes to effect significant changes in the department.