To function in harmony, side by side
To work or act together, especially for a common purpose or benefit.
To allow for mutual unobstructed action
To engage in economic cooperation.
To synchronize, especially in the senses of data synchronization, time synchronization, or synchronizing music with video.
To flush all pending I/O operations to disk.
A music synchronization license, allowing the music to be synchronized with visual media such as films.
Harmony.