Difference between Adieu and Bye

ADIEU vs BYE: NOUN

A farewell.
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; commendation to the care of God at parting.
A farewell, a goodbye; especially a fond farewell, or a lasting or permanent farewell.
A farewell remark

Obsolete spelling of bee.
An extra scored when the batsmen take runs after the ball has passed the striker without hitting either the bat or the batsman.
The position of a person or team in a tournament or competition who draws no opponent in a particular round so advances to the next round unopposed, or is awarded points for a win in a league table; also the phantom opponent of such a person or team.
You advance to the next round in a tournament without playing an opponent
A secondary matter; a side issue.
The position of one who draws no opponent for a round in a tournament and so advances to the next round.
In certain games, a station or place of an individual player.
A dwelling.
In passing; by way of digression; apropos to the matter in hand.
A thing not directly aimed at; something which is a secondary object of regard; an object by the way, etc.; as in on or upon the bye, i. e., in passing; indirectly; by implication.
A run made upon a missed ball.
In various sports in which the contestants are drawn in pairs, the position or turn of one left with no opponent in consequence of an odd number being engaged.
The hole or holes of a stipulated course remaining unplayed at the end of a match.
A farewell remark

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.
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.

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

Good bye, Side, Incident, Pass, So long, Good day, Sayonara, Arrivederci, Goodby, Cheerio, Auf wiedersehen, Au revoir, Adieu, Adios, Goodbye

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

Greeting, Hello, Farewell, Goodnight, Incidental, Side, Incident, Pass, Sayonara, Arrivederci, Goodby, Au revoir, Adieu, Adios, Goodbye

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.

If he threatens, tell him ok bye bye.
Bye bye, buy bonds, and lots of them!
BYE BYE, BRA; w Rudy Simons, m Morton Zieve.
Just once, before I say; Hasta la bye bye!
When We Meet In The Sweet Bye And Bye.
Till we meet in the sweet bye and bye.
Bye Santa and Bye Reindeer and Bye elves and Bye Mrs.
After using QOD City Bye Bye Frizz Shampoo, apply QOD City Bye Bye Frizz Conditioner on the ends of damp hair and massage it.
Eventually, Grundoon learns to say two things: "Bye" and "Bye bye.".
Bye Keeho bye Theo bye Jiung bye Intak bye Soul bye Jongseob have a wonderful day stay safe and peace out.