Hello Kate! I don't know much English but I will try to explain to you ok:
-Dumbing down: Is the process to become something or someone clumsy or stupid. For example, for example a person who watch TV all day, and watch stupid TV Shows, he or she is dumbing down.
-Interpersonal: Is when there is an action between two people, they do together. For example a phone call between two people.
-Skills: Ability, intelligence, capacity to do something. For example if your are good painter, you have skills with the pencil, chalk, brushes or colours.
-Streaming: Communicate, deliver or send something. For example you tell your friend a family story, You're transmitting a story.
I hope you understand those words, likewise you help to me because I didn't know some words :) and now I know.
