The term "sync" has multiple meanings depending on its context.
1) In computing, sync refers to synchronization which is the process of bringing two or more devices or systems into a coordinated state by ensuring that they are operating in unison. This can involve aligning data, time, events, or other variables. For example, when two audio files are synced, it means their playback has been aligned so that they start and stop at the same point.
2) In music, sync refers to the combination of a vocal or instrumental track with a visual image in a video. This is often done for music videos where the song's lyrics and visuals are timed together to create an engaging experience for the viewer.
3) Sync can also refer to the process of bringing two or more things into harmony, such as when people work together effectively towards a common goal. In this context, sync means being in agreement, alignment, or coordination with one another.