A partial eclipse? Or totality? What's the difference?

The UK is gearing up for a partial solar eclipse, while other parts of Europe are due to experience totality. But what are the different types of eclipse? Depending on how the Sun, Moon and Earth line up, different types of eclipses that are visible. During an annular eclipse, it looks like there's a dramatic ring of fire around the Moon - but this is just the part of the Sun that hasn't been covered up.