adversary – n. an enemy

navigation – n. the act of moving in a boat or ship over an area of water

assure – v. to make something certain

detain – v. to officially prevent someone from leaving a place

assembly – n. to meet together with other people

milestone – n. an important point in the progress or development of something

tinderbox – n. a situation that suddenly can turn violent

pivot – v. the action of turning around a point

vision – n. a clear idea about what should happen or be done in the future