I could not find the selection that is missing in your question but I will tell you something about the words and other words that are related to them(synonyms).
Pacification is a noun that is refering to a maintain peace creating and a pacifist is a person who is standing against the war and other bad things such as fighting and violence. Synonyms of ths word are: nonagression, peaceableness, passiveness and more.
Tyranny is also a noun which is referring to a cruel rules and oppresion. It is considering using power over control in a negative way. Synonyms of this words are: absolutism, absolute power, authoritarianism, Caesarism, dictatorship.
