4.- Imperial: Of or relating to the empire or emperor.
Noun: The imperial realm was full of goblins.
5.- Monarch: A sovereign head of state, especially a king, queen, or emperor.
Noun: The monarch placed new laws.
1.- Discovery: The action or process of discovering or being discovered.
Noun: An explorer made a discovery of the Tutankhamun statue.
20.- Robbery: The action of taking property unlawfully from a person or place by force or threat of force.
Noun: A man robbed a (kiosk) store.
11.- Owner: A person who owns something.
Noun: The owner of this house is out.
16.- War: A state of armed conflict between different nations or states or different groups within a nation or state.
Noun: There were world wars many years ago.
6.- Monarchy: A form of government with a monarch at the head.
Noun: The monarchy of France has been spoiled for years by Queen Elizabeth.
18.- Intention: A thing intended; an aim or plan.
Noun: A boy had the intention of going up some rusty stairs of 10 steps.
10.- Tyrant: An absolute ruler unrestrained by law or constitution.
Noun: He controls people like tyrants.
13.- Passenger: A traveler on a public or private conveyance other than the driver, pilot, or crew.
Noun: That passenger fell asleep on the plane.
9.- Treaty: A formally concluded and ratified agreement between countries.
Noun: Russia made a treaty to end the war with Ukraine.
12.- Another: Used to refer to an additional person or thing of the same type as one already mentioned or known about; one more; a further.
Noun: Do you want this pizza or the another one.
19.- Island: A piece of land surrounded by water.
Noun: A family bought a house on an island for half a million dollars.
3.- Empire: An extensive group of states or countries under a single supreme authority, formerly especially an emperor or empress.
Noun: Years ago there was a Roman empire.
2.- Emperor: A sovereign ruler of great power and rank, especially one ruling an empire.
Noun: The emperor controls the entire kingdom.
8.- Revolution: A forcible overthrow of a government or social order, in favor of a new system.
Noun: The Spanish revolution happened many years ago.
7.- Republic: A state in which supreme power is held by the people and their elected representatives, and which has an elected or nominated president rather than a monarch.
Noun: The Republic of Guatemala remains in America.
14.- Death: The action or fact of dying or being killed; the end of the life of a person or organism.
Noun: Death has a skull shape.
17.- Rich: Having a great deal of money or assets; wealthy.
Adjective: That man is very rich, he even has a Ferrari and a Lamborghini Tucan.
15.- Tricky: (Of a task, problem, or situation) requiring care and skill because difficult or awkward.
Adjective: This task is tricky.