Sounds

Sound

Diegetic Sound (natural) - Sound that can be heard by the characters within a scene/ sound part if the imaginary world. sound in the actual scene, so we would hear this if we were there. eg. a door closing, a band playing a performance. but if we hear like a heart beating that is not natural and is added by editing, if we were there we wouldn't hear this.
https://youtu.be/sbKL5g5i8MI

Non-diegetic Sound (not natural) - Sound that the characters cannot hear and is not part if the imaginary world of the story. coming from a source outside the story. No one can hear it but us, the audience. This includes musical soundtrack or a voice over (however this excludes a narration by character within the story, referred to as an internal monologue and is diegetic).
https://youtu.be/sbKL5g5i8MI

Score- The musical component of a programs soundtrack usually composed specifically for the scene.

Sound Effects- Sounds that are added to a film during the post-production stage.

Foley Sound- The reproduction of everyday sounds from footsteps, a door opening, or a creek in the floor, that are done on post production by Foley artist.
https://youtu.be/OONaPcZ4EAs

Synchronous sound (or on-screen sound) - is the sound that is matched or synchronized with what is viewed. eg. if the film portrays a character playing the piano, the sounds of the piano are projected. Creates realism

Asynchronous sound- Sound which is indigenous to the action but no precisely synchronized with the action. Makes audience feel uncomfortable. sound that doesn't fit in the pace/beat in the film.

Dialogue- Spoken between or by characters

Contrapuntal sound- Sound or music that opposes the action on screen eg. montage of a someones horrible life but the music is happy like "what a wonderful world"
https://youtu.be/pCGAYS08Do4