<mawenb@gmail.com> schrieb:

Keyboard accelerators are typically used together with menus.  They are
shown on the right edge of the menu item, such as "Save      Ctrl+S".

Shortcut is IMO a more general term that covers keyboard accelerators,
hotkeys and mnemonics.

Hotkeys are often used to bring a form/application into the front if a
certain key or sequence of keys is pressed.

Mnemonics are the underlined characters in menus' and controls' captions,
such as "&Save".  They are accessible via pressing the Alt key and the
mnemonic or by simply pressing the mnemonic, depending on the exact
situation.

The first is a mnemonic, the second an accelerator, and the third is a
mnemonic too.

I may be wrong because the terms are often used as synonyms, although each
of them has a specific meaning.