The contents or substance of something — the details, subject matter, or main points (of a document, talk, product, etc.).
契約書の内容をよく確認してください。
Please check the contents of the contract carefully.
授業の内容は毎週メールで送ります。
I will send the lesson contents by email every week.
その映画は内容がとても濃い。
That movie has very rich/heavy content.