What is a Gerund?
A gerund is a sentence in which a verb, usually ending in -ing, is used as a noun that something else possesses. For example: Susie's running was making her tired. As you can see if you did not know what a gerund was it would seem Susie owned running which makes no sense.
Phillip's swimming makes people jealous.
Josh's shouting is making people nervous.
Richard's talking made him seem very intelligent.
MORE ABOUT GERUNDS
As you can see in the example every person "possesses" a verb. Phillip has swimming, Josh has shouting, and Richard has talking. That is if these were taken literally. In reality we know these can all be said differently to have the same meaning. People were jealous of Phillip while he was swimming. While Josh was shouting, people were nervous. People thought that Richard was very intelligent because he was talking.
Swimming is Joe's favorite hobby.
Aidan's saxophone playing was very good.
Screaming is Jalen's favorite weekend activity.
THAT's ALL FOLKS!