To exist together, at the same time, or in the same place.
To live in peace with another or others despite differences, especially as a matter of policy: “recognize and accept, as every President in the nuclear age has, that this means coexisting with the Soviet Union” (McGeorge Bundy)
derivatives
cóex·iśtence
noun
cóex·iśtent
adjective
The American Heritage® Dictionary of the English Language, Fourth Edition