How does language change?

different regions use the same language differently and cause it to change.

people make up new words to describe new things.

both of these

Both of those. Both of those options are how the people in America got their language to be different from the English place of origin.

Soliloquy

When an actor is alone on stage, or speaking so that no other characters can hear them, it is called a soliloquy. This is a device used so that the audience can see what's inside the character's mind without any of the other characters knowing the information.