They just do. Some examples would be: Lead them across the street. -or- That paint has Lead in it. I heard that they're Polish. -or- Polish the furniture. Read your book. -or- I've already read that...
Tyrant: "Any person in a position of authority who exercises power oppressively or unjustly". "A ruler who exercises power in a harsh, cruel manner".
Based on the famous Marvel Comics, tyrant is a...