Minecraft wiki entry for Walls_and_buttresses, associated text: 1 Video
2 Types of wall
2.1 Retaining wall
2.2 Ha-ha
2.3 Bastion
2.4 Tapered wall
2.5 Embrasure
2.6 Interior walls
3 Buttresses
3.1 Flying buttress
3.2 Remedial buttress
3.3 Buttress gallery
4 Parts of an interior wall
4.1 Other wall decoration styles