Battleship vs Battlewagon - What's the difference?

battleship | battlewagon |

As nouns the difference between battleship and battlewagon

is that battleship is (military) large capital warship displacing tens of thousands of tons, heavily armoured and armed with big guns battleships are now obsolescent, replaced by smaller vessels with guided missiles types: dreadnought, pre-dreadnought while battlewagon is a heavily armed combat vehicle, as a war chariot or battleship.