Christmas is an annual holiday that is celebrated in many countries around the world on December 25th. It is a Christian holiday that commemorates the birth of Jesus Christ, but it is also celebrated by many people who are not religious.

Here are some common ways that Christmas is celebrated:

1. Decorations: Many people decorate their homes with Christmas trees, wreaths, lights, and other festive decorations.

2. Gift-giving: Christmas is a time for giving and receiving gifts. Many people exchange gifts with family and friends, and some also donate to charity.

3. Christmas dinner: A traditional Christmas dinner often includes roast turkey or ham, mashed potatoes, stuffing, cranberry sauce, and other festive dishes.

4. Christmas carols: Many people enjoy singing Christmas carols, both at home and in public, and attending holiday concerts and performances.

5. Santa Claus: In many cultures, Santa Claus (also known as Father Christmas) is a popular figure associated with Christmas. Children often leave out cookies and milk for Santa Claus on Christmas Eve, and wake up to find presents that he has left for them.

Overall, Christmas is a time for family, friends, and celebration. It is a time for giving, reflecting on the year that has passed, and looking forward to the new year.