The word "contents" means parts within the book. Are there any other words on this page that you don't know? You can look them up in the glossary or you might figure out the meaning once we read that section!
The table of contents is like a map of the book. This tells us what sections our book will have, what we will learn about, and what pages each section starts on. If we get lost, we can use our table of contents to get back on track!