Difference between Fanjet and Turbofan

What is the difference between Fanjet and Turbofan?

Fanjet as a noun is a turbofan engine while Turbofan as a noun is a turbojet engine having a (typically ducted) fan that forces air directly into the hot exhaust and obtains a portion of the thrust from the turbojet and a portion from the turbojet section.

We hope you now know whether to use Fanjet or Turbofan in your sentence.