Difference between Auf Wiedersehen and Adieu

AUF WIEDERSEHEN vs ADIEU: NOUN

A farewell, a goodbye; especially a fond farewell, or a lasting or permanent farewell.
A farewell; commendation to the care of God at parting.
Adieus or (in French spelling) adieux (a-dū z′ , ȧ-dyė′ ). A farewell or commendation to the care of God: as, an everlasting adieu; to make one's adieus.
A farewell.
A farewell remark

Synonyms Adieu, Farewell, Good-by. These words have completely lost their original meanings. In use the difference between them is only one of formality, good-by being the most common, and adieu the most formal. By the Society of Friends (and perhaps some other sects) farewell is preferred, as not involving the careless mention of the name of God. In strict propriety, farewell is a parting salutation to persons going away.
Literally, to God, an ellipsis for I commend you to God: an expression of kind wishes at the parting of friends, equivalent to farewell; hence, a parting salutation in general: as, adieu to my hopes.

Ciao, Good bye, Good by, Bye bye, Good day, Bye, So long, Goodby, Cheerio, Goodbye, Adieu, Adios, Sayonara, Au revoir, Arrivederci

Farewell, Bye bye, Good by, Good bye, Good day, So long, Bye, Goodby, Cheerio, Arrivederci, Sayonara, Auf wiedersehen, Adios, Au revoir, Goodbye

Bon voyage, Bitte, Wunderbar, Auf, Meine, Danke, Farewell, Bye, Goodby, Goodbye, Adieu, Adios, Sayonara, Au revoir, Arrivederci

Hurray, Hello, Bon voyage, Rebukeful, Bidden, Bade, Goodnight, Farewell, Bye, Goodby, Arrivederci, Sayonara, Adios, Au revoir, Goodbye

Andrew Dickinson, Third Country Mandatory Rules In the Law Applicable to Contractual Obligations: So Long, Farewell, Auf Wiedersehen, Adieu?
Normally Monsieur Candie, I would say, auf wiedersehen.
Auf Wiedersehen Blackpool, wir fahren dorthin, wo es auf Sonnenschein eine Garantie gibt.
Auf Wiedersehen, Auf Wiedersehen und Auf Wiedersehen ist Wachstum.

We may bid adieu to all government in this Country.
Adieu Paris with a son Rank This Chart filmography bio.
This means you bid adieu to picture frame shop.
Adieu to pay monthly bill down in between.
The astrologer received his passport and bade adieu.
So, without further adieu, here is Tyler Nelson.
Police bids adieu to their canine friend Leo.
Once more, adieu; be valiant, and speed well!
Young girl, you loved too true, I leave you now, farewell, we part, adieu, part, love, adieu.
But each season holds a beauty too wonderful to miss, so Adieu, Adieu.