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Encoding is the process of converting data from one format to another, for example, to store or transmit it more efficiently. This is often done for compatibility, such as converting text into a format like UTF-8. Encoding is different from encryption because, with encoding, the data remains readable to anyone who recognises the correct format. In contrast, encryption makes the data unreadable to parties without the correct key.

Encryption is the process of converting data into a coded form, so it can only be read by people or systems with the correct key to decrypt it. The goal is to ensure the confidentiality of the data. Note: encryption is different from encoding. With encoding, only the format of the data is changed to make it easier to transport or store, without security as the primary goal.

An endpoint is a specific web address within an API that acts as the access point for receiving or sending data. You can think of it as a door to a particular function or dataset within a system. Each endpoint has a unique purpose, such as retrieving information or performing an action.

A 404 error, also known as a 404 not found error, appears when a page on a website cannot be found. This usually occurs if the page has been removed or the URL has been entered incorrectly. It's a standard HTTP response code indicating that although the client was able to communicate with the server, the server could not find the requested page. 404 errors can be frustrating for users as they indicate that the desired information is not available, but they also assist in website maintenance by alerting web administrators to dead links on their site.