| A | B |
| Embrasure | an opening that enframes a door way or window |
| Macicolations | an openig in a floor overhanging a gallery defended castle from there |
| Merlons | a solid part of a embattled parapet |
| Motte | artifical earth for 11 -12 century castles |
| Parapet | a low wall outside of the main wall |
| Plinth | a projecting base of a wall |
| Portcullis | grating drop vertically from grooves to block a passage or gate |
| Postern | a back door of a castle |
| Solar | an upper romm of a medevil castle |