Difference between Invade and Overrun

Invade

Part of speech: verb

Definition: To move into. To enter by force in order to conquer. To infest or overrun.

Example sentence: The best thing you can do for someone is make them a beautiful plate of food. How else can you invade someone's body without actually touching them?

Overrun

Part of speech: verb

Definition: To defeat an enemy and invade in great numbers, seizing his positions conclusively.To infest, swarm over, flow overTo run past; exceedTo continue for too long.To readjust by shifting the excess letter(s) to the next line of a set type

Part of speech: noun

Definition: An instance of overrunningThe amount by which something overruns