Footer is a block at the bottom of the website that appears on all pages. Often it duplicates the main menu, places links to social networks, a feedback form, and contact information. Quite often this term is used when developing a business site.
FTP (File Transfer Protocol) is one of the oldest protocols for transferring data over a network. It allows you to browse the contents of folders and files, as well as download and upload files to a remote server. This term is often used in website development.