Partition: Partition is the act of dividing or separating something into different parts or sections. In the case of Vietnam, partition refers to the initial division between North and South Vietnam following the Geneva Accords in 1954.
Demilitarized Zone (DMZ): The DMZ is a buffer zone usually created as a result of a ceasefire agreement between conflicting parties. In the context of Vietnam, it was an area that separated North and South Vietnam during the period of division.
Cold War: The Cold War was a political rivalry between the United States and Soviet Union characterized by ideological differences without direct military conflict. The division between North and South Vietnam was influenced by this larger global conflict.