| A | B |
|---|
| Outer bailey | The first courtyard inside the outer walls of the castle. |
| Castle | Home for lords. |
| Merlon | The part of the battlement that protected the defenders |
| Inner bailey | The inner courtyard of a castle (protected by two wall). |
| Curtain or Wall | A strongly built wall surrounding the courtyard of the castle. |
| The Keep(also known as donjon) | The strongest and most heavily fortified part of the castle as it was designed to be the last line of defence(usually housed the owner and his family. |
| Drawbridge | A bridge at the entrance of the castle which could be raised or lowered over a moat. |
| Parapets | Low walls around the top edge of a tower or castle wall. |
| Corbels | Stone projections in the walls which acted like brackets to support parapets. |
| Machicolations | Holes in the low walls(parapets) used for dropping all kinds of things(boiling oil, hot water,stones,etc)The reason parapets were built. |
| Moat | the ditch around the castle and was usally filled with water. |
| Barbican | A forward gate of the castle located before the main gate that offered extra protection. |
| Postern gate | A back gate that was supposed to be a secret and used for attaking and surrounding the enemy outside the castle,as an escape. |
| Arrow-loops | Narrow openings in the castle's towers through which archers fired their arrows on the enemy below. |
| Portcullis | The main gate made of very heavy wood and reinforced withiron gating. |
| Gatehouse | The living quarters over the main gate of the castles |
| Murder holes | wholes in the ceiling just after the front gate used for droping large stones on attackers who got through the front gate. |
| Rocky ledges | Ledges on rocks where castles were placed that could not be seized by tunneling |
