| Term | Definition |
| MP | Represents a constituency. |
| Chancellor of the Exchequer | He is responsible for the Treasury. |
| Speaker | He keeps order during debates in Parliament. |
| Home Secretary | He is responsible for domestic affairs. |
| Foreign Secretary | He is responsible for the Foreign affairs. |
| Peer | He sits in House of Lords. |
| Prime Minister | Head of Government. |
| Back-bencher | Less important MP. |
| Shadow Minister | Member of the Shadow cabinet. |
| Whip | He is responsible for making sure that all MPs vote in important debates. |
| Civil servant | He is employed in government departments. |
| Minister | Member of the Cabinet. |