Coeval and In time

Coeval adjective - Existing or occurring at the same period of time.

In time and coeval are semantically related In some cases you can use "In time" instead an adjective "Coeval".

In time adverb - Within an indefinite time or at an unspecified future time.

Coeval and in time are semantically related in contributing topic. Sometimes you can use "Coeval" instead an adjective phrase "In time".