Is it farther or further?
synchronous syn·chro·nous (sĭng'krə-nəs, sĭn'-)
Occurring or existing at the same time.
operating system, communications
1. Two or more processes that depend upon the occurrences of specific events such as common timing signals.
2. Occurring at the same time or at the same rate or with a regular or predictable time relationship or sequence.