What's the difference between There, Their and They're?

Question 1

When do you use There?

Answer 1

you use it when you are talking about place, location
e.g the car was parked there

Question 2

When do you use Their?

Answer 2

use it when you talk about ownership, posses, belonging
e.g. This is their apartment.

Question 3

When do you use They’re?

Answer 3

means they are
use it when it’s plural (many people) and it is in the present tense
e.g they’re going to the movie