Registration:
Inform users that they must agree to a set of rules when they register on your website or mobile app.

Disable or terminate accounts:
Inform users that their accounts can be disabled or terminated if abuses happen on your website or mobile app, e.g. spamming, swearing etc.

Owner of content:
Notify users that you, the company, is the owner of the content appearing on your website or mobile app – except in cases where other users can post content (upload, share, create etc.) where the users are the owners of such content.

Changes to the agreement:
Users should be informed about upcoming changes to the agreement before the changes are applied.

While a Terms of Use is recommended to have, it’s not mandatory by law as the Privacy Policy agreement is required.

This agreement serves a single purpose: to inform users of rules that they must agree to. A Privacy Policy must inform users about your privacy practices (what data you collect, why, how, etc.)

The definition of a Terms of Use agreement is simple:

Terms of service (also known as terms of use and terms and conditions, commonly abbreviated as ToS or TOS and TOU) are rules which one must agree to abide by in order to use a service.

Because this agreement simply acts as a contract between you, the company, and the users using or accessing your website or mobile app, the agreement can be named as you’d like:

• Terms of Use (ToU)
• Terms of Service (ToS)
• Terms and Conditions (T&C)
• User Agreement
• Conditions of Use
• And so on

The “Conditions of Use” of Amazon could be named “Terms of Use”:

Agreements like this are usually composed with the following clauses added:

• Introduction
• User Content, if the website or mobile app allows for users to create or share content
• Copyright infringement or DMCA (DMCA is for US only)
• Warranty
• Limitation of Liability
• Indemnification
• Arbitration
• Choice of law or Governing law

These are only a few examples of what kind of clauses and disclosures you can add in this kind of agreement.