So, with front-running on Ethereum, am I understanding correctly that what is happening here is that bots are being used to look at buy and sell orders on decen

So, with front-running on Ethereum, am I understanding correctly that what is happening here is that bots are being used to look at buy and sell orders on decentralized exchanges and then sending their own tokens with a slightly higher gas price to get in 'front' of the detected order? What is the point of "back-running?"