Answer:
Shot framing: How far away or how close you frame a shot can convey the theme or mood of a movie. For example, if you zoom in really close on a character, it may mean that they are feeling a deep emotion, and the audience knows to focus on them.
Camera angles: What you include in a picture depends on the angle, and this demonstrates the theme. For example, in Shawshank Redemption, a famous movie, the camera angle is often set up almost at bird's-eye-view to display the range of the prison and show that the main character is almost swallowed up in the immense jail.
Editing choice / length of take: I won't go into too much detail here, because it's fairly straightforward. How you edit clips - the music you put behind, the number of takes, if you piecemeal a scene together - contributes to the feel. If it's a scary movie, there's going to be a lot of short shots and then a jumpscare or something.
Color: In a movie I saw recently, A Simple Favor, the main character was always set in a homey-looking kitchen, with vibrant, pastel shades, whereas the more racy character wore mainly black and white, or more adult colors. This changed the feel of the shots.
Camera movement: For example, in The Office, which is a mocumentary, the filmers pretended like they were doing a documentary-style production, so the camera is almost sloppy at times, as if it weren't staged and as if an actual reality was occurring.