Dialogue is what the characters say.
Diegetic sound is recorded at the same time as the characters are speaking (or it appears to be).
Incidental music in drama is very important to the emotional landscape of a scene and is added.
Non- diegetic sound is voice over narration or music which is put over the top that the characters can't hear but, the audience at home can which is recorded seperately.
Sound effects (SFX) adds to the immediacy of a scene, and can often increase the intensity of the drama.
Cut- shot/reverse shot- jump cut- crosscutting-cutaway- matching eyelines.
Transitions- dissolves or mixes, wipes, fade-in and fade-out, superimpositions, CGI, visual effects, multi-screen.
Manipulating- time use of slomo (slow motion), or time lapse, or speeded up sequences are useful devices for the editor to speed up or slow down time.