The phrase " Happy Christmas" is a British expression, and in other parts of the English speaking world it is "Merry Christmas". In either case the sentiment is to wish the other person an "enjoyable holiday". People say Happy Christmas because they want their family and friends to have an enjoyable holiday.
A seasonal greeting is a greeting apropos to the season, e.g., Merry Christmas, Happy Easter, Happy Independence Day, etc.
The greeting 'Happy Christmas' may be rendered into Brazilian Portuguese as Boa Natal, or Natal Alegre. But a standard Christmas greeting is Boas Festas. And there's always the traditional greeting of Feliz Natal, from Portugal. Boa = good. Alegre = happy. Feliz = happy, but rendered as Merry. Natal = Christmas. Festas = celebrations, feasts.
"Happy Christmas, and a Happy New Year!"
The appropriate greeting for Easter is 'Happy Easter'. If one were to say Happy Birthday Jesus, at Christmas, they could say Christ is Risen at Easter.
People usually say merry Christmas, Happy holidays or seasons greeting. In recent years Merry Christmas is being used less and less in fear of offending people.
they kiss when the opportunity arises, by greeting, hello, goodbye, Happy birthday, merry Christmas, etc..
Some Christmas greetings that are commonly said are "Merry Christmas and happy New Year!", "Wish you peace, joy and happiness through Christmas and the coming year.", "Warm greetings and best wishes for Christmas and the New Year!".
People say Afishapa to one another, using an Akan (a major Ghanian language) word that translates to Merry Christmas and Happy New Year.
Akwaaba
It means "God bless ye (greeting) and Merry Christmas" but "Dia daoibh is Nollaig shona daoibh" may be preferrable.
Merry Christmas = Bom Natal Happy Christmas = Feliz Natal
Christmas greeting cards only celebrate Christmas because it only comes around once a year. Therefore, they only celebrate the important holiday that makes us happy.