Meaning : Occurring or existing at the same time or having the same period or phase.
							Example : 
							Recovery was synchronous with therapy.
							A synchronous set of clocks.
							The synchronous action of a bird's wings in flight.
							Synchronous oscillations.
							
Synonyms : synchronal, synchronic
Not synchronous. Not occurring or existing at the same time or having the same period or phase.
asynchronousMeaning : (digital communication) pertaining to a transmission technique that requires a common clock signal (a timing reference) between the communicating devices in order to coordinate their transmissions.
(digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices. Timing signals are derived from special characters in the data stream itself.
asynchronous