Broad license to user content
You are agreeing to grant Google a worldwide, royalty-free, sublicensable license to use your content for operating, improving, promoting, and developing its services.
“This license allows Google to: host, reproduce, distribute, communicate, and use your content — for example, to save your content on our systems and make it accessible from anywhere you go. publish, publicly perform, or publicly display your content, if you’ve made it visible to others. modify and create derivative works based on your content, such as reformatting or translating it. sublicense these rights to: other users to allow the services to work as designed... our contractors who’ve signed agreements with us that are consistent with these terms, only for the limited purposes described in the Purpose section below”
What that means: Your content can be used by Google, its contractors, and other users in various ways, potentially without your specific awareness of each use.
Google obtains a broad, worldwide license to your content, allowing them to host, reproduce, distribute, modify, and sublicense it. This covers many uses beyond merely providing the core service.