Synergy is a noun that refers to the interaction of more than one agent.

Our word of the day’s origin is from the Greek word sunergos (SUN er gose) which means ‘working together.’ The word is used to refer to cases when the sum of different people working together creates something greater than their separate effects. For example: Our first two albums were lots of fun, but our third album is when the synergy between us had peaked. With that album, all our combined worked created a masterpiece.