1) Synchroneity 2) Synchronicity 3) Synchronisation 4) Synchronism 5) Synchronization 6) Synchrony 7) Temporal relation 
In telecommunication, the term synchronizing has the following meanings: In the civilian community, the noun `synchronization ` is preferred to `synchronizing.` ...
• (p. pr. & vb. n.) of Synchronize
the process or sequence of processes whereby a synchronous machine, after accelerating, is brought into synchronism with another synchronous machine or with a system