I will write the answers for you and choose what is the difference.
Verb: flee ------ Synonyms: fly, take flight.
1.To run away.
Noun: breakout ------Synonyms: break away, goal break, jailbreak.
1. An escape from jail.
Verb: break out
1.Begin suddenly and sometimes violently.
2.Move away or escape suddenly.
Noun:runaway ------ Synonyms:breakaway, fugitive, walkaway.
1.Someone who flees from an uncongenial situation.
1.Escape or flee.
2.Escape from the control of.
1.Completely out of control.