Also, "take care" doesn't mean goodbye, even though it is a farewell wish. In a situation such as the fictional workplace setting between Tony Stark the boss and his extremely close member of staff, Pepper Potts, the mixture of close and distant language expressed in "Take care, sir" can work.
6 Take care can be used as a closing greeting that really cannot be picked apart further, a mere synonym of goodbye. It's not the case, though, as you suspect that it "doesn't contain any other meaning", because it can also mean, well, take care.
Bye is short for goodbye, which is an alteration of alteration of God be with you. kthxbye is the pinnacle of English's advancement, shortening All correct, Thank you, God be with you. into seven lowercase letters.
etymology - What is the origin of the word "goodbye"? - English ...
i've always wondered if there was a very fine semantic (or etymological) difference between the various ways of saying goodbye to somebody. specifically "farewell" and "goodbye" And how are they considered in terms of finality? Obviously "see you later" implies you'll be seeing them sometime...
I'm also a Minneapolis native, and I would add that when we say "bye" on its' own it is pronounced differently that when used at the end of the word goodbye. Using the word "bye" on it's own we will draw out the final "e" into almost its own syllable, like: by-eee, in sing-song fashion. Whereas at the end of "goodbye" it is clipped, like: good-by. I agree that "bye bye" is either baby talk or ...