Agent
Part of speech: noun
Definition: One who exerts power, or has the power to act; an actor. One who acts for, or in the place of, another (the principal), by authority from him; one intrusted with the business of another; a substitute; a deputy; a factor. An active power or cause; that which has the power to produce an effect; as, a physical, chemical, or medicinal agent; as, heat is a powerful agent. In the client-server model, the part of the system that performs information preparation and exchange on behalf of a client or server. Especially in the phrase “intelligent agent” it implies some kind of autonomous process which can communicate with other agents to perform some collective task on behalf of one or more humans. The participant of a situation that carries out the action in this situation, e.g. "the boy" in the sentences "The boy kicked the ball" and "The ball was kicked by the boy".
Example sentence: My father is a retired FBI agent. I have guns in my house. I'm not against the Second Amendment.
Factor
Part of speech: verb
Definition: To find all the factors of (a number or other mathematical object) (the objects that divide it evenly).To be a product of other objects.
Part of speech: noun
Definition: A doer, maker; a person who does things for another person or organizationAn integral partAny of various objects multiplied together to form some wholeInfluence; a phenomenon that affects the nature, the magnitude, and/or the timing of a consequence
Example sentence: A State in the grip of neo-colonialism is not master of its own destiny. It is this factor which makes neo-colonialism such a serious threat to world peace.