Interaction frequency means how often you talk or play with someone. It's like if you have a friend and you only see them once a year, you don't interact with them as much as a friend you see every day. The more times you talk, play, or spend time with someone, the higher the interaction frequency. So, the interaction frequency tells you how often you get to see or talk to your friends or your family. Just like how often you play with your toys or watch your favorite TV show. It's all about how often you do something with someone or something else.