coincident

形容词 coincident:

1. occurring or operating at the same time
   同义词：coincidental, coinciding, concurrent, co-occurrent, cooccurring, simultaneous
2. matching point for point
   同义词：coinciding

1. The culture areas are essentially coincident with language areas.
   文化区与语言区基本重合。

co.in.ci.dent

adj.（形容词）
Occupying the same area in space or happening at the same time:
同时发生的：在空间占据相同区域或在同一时间发生的：
例句：
a series of coincident events.See Synonyms at contemporary
一系列同时发生的事件参见 contemporary

Being very similar to another, as in nature:
相似的：与另一个非常相似，如在性质上：
例句：
testimony that was coincident with the actual facts.
与事实相符合的证据

Matching point for point; coinciding:
符合的：点与点相符合的；重合的：
例句：
coincident circles.
重合圆