mindmap root((同时)) contemporary is likely to apply to people and what relates to them: Abraham Lincoln was ~ with Charles Darwin. contemporaneous applies to events: Victoria's reign was ~ with British hegemony. coeval implies extemporaneousness at some remote time or for a long period and refers usually to periods, ages, eras, or eons: the rise of the leisure class was ~ with the flowering of the arts. synchronous implies exact correspondence between or during usually brief periods of time, and especially in periodic intervals: the ~ action of a bird's wings in flight. simultaneous implies exact coincidence at a point of time: a ~ ringing of church bells miles apart. coincident is applied to events that happen at the same time and may be used in order to avoid implication of causal relationship: the end of World War II was ~ with a great vintage year.