Both, depending on the construction that follows. We congratulate people on their promotion, and for being promoted.
"Congratulations" is the correct term to use when offering well-wishes or expressing joy for someone's accomplishment or good news. "Congratulation" is not used in this context.
congratulations on.
congratulations for being
Congratulations David
The correct spelling is 'congratulations'.
congratulations = félicitations or congratulations
The adjective form of "congratulations" is "congratulatory."
In MΔori, you can say "whakamihi" which means congratulations.
congratulations
Congratulations!
No, you cannot say, they send their congratulations. You have to say they sent their congratulations.
congratulations on your wedding