Minecraft wiki entry for Hitbox, associated text: 1 Block
1.1 Collision box
1.2 Outline box
1.3 Interaction box
1.4 Block support shape
2 Entity
2.1 Boundary box
2.2 Interaction box
2.3 Headspace
3 History
3.1 Blocks
3.1.1 Collision boxes
3.1.2 Outline and interaction boxes
3.2 Entities
3.2.1 Boundary boxes
4 Trivia
5 References