What is the difference between the BMW 3 Series and the M3 model?

I am considering buying a BMW 3 Series, but I am confused about the difference between the regular model and the M3 model. Can someone explain the technical differences and which one would be a better choice?

The BMW 3 Series and the M3 model are both great cars, but they have some key differences. One major difference is in the engine. The M3 has a more powerful engine and is designed for high performance driving, while the 3 Series has a more balanced and versatile engine. The M3 also has upgraded suspension, brakes, and other performance features. If you want a car for daily use with some occasional fun, the 3 Series is a good choice. But if you want a car for track days and high speed driving, the M3 is the way to go.