What are the main HTTP methods you know?

The main HTTP methods used for client-server interaction:

• GET — request to retrieve a resource. Should not change the server's state.
• POST — send data to the server to create a new resource or perform an operation.
• PUT — replace or update a resource at the specified URI.
• DELETE — delete a resource.
• PATCH — partially update a resource.
• HEAD — retrieve only the response headers, without the body.
• OPTIONS — request supported methods for a resource from the server.

Example: when loading a page, the browser sends a GET request, and when submitting a form — POST.