What is the difference between a monologue and a soliloquy?

Here is your

Monologue is a long speech by a actor in a performance.

Soliloquy is a person speaking their thoughts out loud mainly happens in performances such as plays.

So the difference between these two things are that: "a monologue is a actors speech in a play but a soliloquy is a actors thoughts that are being said out loud in a play."

Hope this helps!

greet them:

buenas noches.

that is considered night time which is when "good night" is used.