What is the difference between a TLS connection and a TLS session?

I'm taking a class on how to make a movie, and it offers some apps that would be in the process. the thing is, i don't have any of those ha. if you have any tips on some apps i could use, that would be awesome. i don't have an iphone, so don't suggest any apps like imovie. i know that this is a weird question, but it would be super for me. : )

You need a quick answer from a coworker. the most effective way to reach your coworker is through a. cloud server b. instant message c. teleconference d. telepresence

In simple terms, how would you define a protocol?