Answer:
Central idea and theme are different
Step-by-step explanation:
Central idea is like the main idea. When you look at the back of a book or movie, it usually tells you a summary of the story. The summary is the same as a central idea.
A theme is more like the message that the story is trying to tell. It's not always stated outright, and you can usually make your own interpretation of the theme. A common theme you probably know is "don't judge a book by it's cover."
Hope that helps <3