Every 10 minutes
If a word document is rescued using AutoRecover functionality, it should appear on the left hand side pane the next time you start Word.
If your computer or Word itself crashed: if you are lucky, Autorecover may have saved it and it will appear when next opening Word. Apart from this, there is no other way of recovering an unsaved document.
Find-and-replace.
No it does not
AutoCorrect
auto correct
Document Compare
Every word processing program has a "search Document" feature. Plug in the word or phrase you are looking for, and it will find it immediately.
Find-and-replace.
The Ruler.
Find-and-replace.
auto-complete