| A | B |
| Stood with Bows and arrows keeping watch | Sentries |
| Stone structures that protect sentries | battlements |
| Gap in a battlement | Crenel |
| Solid Stone part of a battlement | Merlon |
| Walled passage leads to castle gate | Barbican |
| Cross this over the Moat | Drawbridge |
| Deep ditch surrounds the Castle | Moat |
| Iron door protecting castle gate | Portcullis |
| Tall structure at each corner of the castle | Keep |
| Narrow vertical slit where arrows can be fired | arrow loop |
| Bailey or Ward | Courtyard in the castle |
| Principal living quarters of a castle | Great hall |
| Protective wall at the top of the Castle | parapet |
| Finial | slender piece of stone that decorates the merlon |
| stable | structure for castle horses |
| donjon | inner storehouse at the bottom of the keep |