Tag keys seems to be in use for various things. What should be retagged?
"Key" seems to mean quite a few different things. Good catch,
it would involve a lot of manual retagging though doesn't matter anymore though :P
Both the physical ones on the keyboard and the conceptual ones like hotkeys, key-combos, and keystrokes that perform functions. Mostly in combination with keyboard, keyboard-shortcut, keyboard-layout, hotkeys.
The ones used in Windows Registry. Mostly in combination with registry.
SSH keys generated by
ssh-keygen tool. Mostly in combination with ssh.