1. Sound Diegetic Sound Non-Diegetic Sound
Any sound that the character or characters on screen can hear
Examples: Characters talking to one another Footsteps, keys jingling, water features Punches, slaps, physical movement
Video Clip
Non-Diegetic Sound
Any sound that the audience can hear but the characters on screen cannot.
Examples: Film score/soundtrack Third person narration/voiceover
Clip: 2-3 mins
Great Example of Score and Music with this clip too:

2. Sound Synchronous Sound
Sound that is matched with the action and movements being viewed
A character playing the piano, while the audience hears the sounds of the piano simultaneously

3. Music
Film Composer – creates original score for the film under the direction of the director
Film music provides rhythm and deepens the emotional response of the audience.
Narrative Music – nondiegetic music added to the background to raise the emotional response of the audience and add another layer of depth and complexity. Also referred to as ‘the score.’
Great Example of Score and Music with this clip too:

4. Music
Narrative Cueing – The way that music tells us what is happening in the plot
Clip