There is a lot to be said about Christams. A person could discuss the religious aspects of it, the gift-giving traditions, the foods, the decorations, the holiday cheer, the family gatherings, and so much more.
Americans say: "Merry Christmas" and people from England say: "Happy Christmas".
they just say HAPPY CHRISTMAS
You say "Merry Christmas" in Mexico as "Feliz Navidad" or "Happy Christmas."
If you can say Christmas is Christian Diwali then it is perfectly fine to say that Diwali is Hindu Christmas :)
We say "Christmas Lawmhnak"
You say ' Merry Christmas' in the UK.
Just as in your question !They tend to say "Happy Christmas" instead of "Merry".Merry Christmas
Hanukkah is a holiday, not a language. You cannot say "Merry Christmas in Hanukkah. That's like asking: "How do you say Merry Christmas in Easter" I think he means how do you say merry Christmas in Hebrew
To say Happy Christmas in Punjabi you simply say "khuśa krisamasa".
merry Christmas= Christmas aashamsakal
Joyeux Noel is how you say Merry Christmas in french.
Yoda might say, "Merry Christmas, you will!"