coextensive

adjective3

1. •
   Having the same spatial limits or boundaries; sharing the same area.

   • The city and county of San Francisco are coextensive.
2. •
   Occurring over the same period of time; contemporaneous.

   • His life is almost co-extensive with one of the most disastrous periods in Roman history. — 1946
3. •
   Having the same extension—the object or set of objects to which a term refers.