synchronization
noun /ˌsɪŋkrənaɪˈzeɪʃn/
  /ˌsɪŋkrənəˈzeɪʃn/
(British English also synchronisation)
 [uncountable]- the fact of happening at the same time or moving at the same speed as something else; the act of making something do this
- synchronization of the business cycle throughout the EU
 - Contract and relax your muscles in synchronization with your breathing.
 
 - (computing) the act of linking data files between one computer or mobile device and another so that the information in the files on both machines is the same 
- synchronization (of something) (between something) automatic wireless synchronization of your email, calendar and contacts between different devices
 - synchronization (of something) (with something) The system provides full wireless connectivity and easy synchronization with other wireless devices.