Glossary

I'm a chain blogger so here is another one... 

Diegetic : It is sound that the characters can hear as well as the audience, and usually implies a reaction from the character. Also called "literal sound" or "actual sound"

Non-Diegetic : It is sounds which is represented as coming from a source outside the story space, ie. its source is neither visible on the screen, nor has been implied to be present in the action. Also called "non-literal sound" or "commentary sound"

Ambient : Sound surrounding area or environment.

SFX : Sound Effects (Special Effects).

Mood : Sound which sets the mood.

Tone : A sound that with reference to its quality, pitch and strength.

Genre : A category of music, marked by their style such as Hip Hop or Rock and many others

Theme Music : Music that introduces, develops and ends the film.

Voiceover : Known as voice of God and Narration.

Music Score : Music written for the film/atmosphere.

Synchronous Sound : Sound that matches with the actions.

Asynchronous Sound : Sound that originates from outside.

Contrapuntal : Sound that does not match the visuals, using Clockwork Orange attack scene.

Silence : No noise or sound at all.

Selective Sound : Used to emphasize key sound elements within a sequence. 

Sound Bridge : Use of sound to help transition between scenes.

;)