一、different in nature
译文：本质不同
1、Spring Festival: the Spring Festival, the lunar new year, is the beginning of the year.
译文：春节：春节，即农历新年，是一年之岁首。
2、Christmas: it is set up to celebrate the birth of Jesus.
译文：圣诞节：为了庆祝耶稣的出生而设立的。
二、Different origins
译文：起源不同
1、Spring Festival: it was formed in the ancient people's activities of sacrificing to heaven and earth gods and ancestors.
译文：春节起源：形成于古人择吉日祭祀，以谢天地神灵、祖先恩德的活动。
2、Christmas: it originated from the Roman New Year's agricultural God's day. It has nothing to do with Christianity.
After the prevalence of Christianity in the Roman Empire, the Holy See incorporated this folk festival into the Christian system, and celebrated the birth of Jesus.
译文：圣诞节起源：源自古罗马人迎接新年的农神节，这与基督教无关。罗马帝国基督教盛行后，罗马教廷将这一民间节日纳入基督教体系，庆祝耶稣诞生。
三、Spring Festival:
译文：传统民俗不同
1、Handle new year's products
译文：春节传统民俗：
（1）Chinese New Year's customs have a long history. There are many and varied new year's customs in different parts of the country.
译文：办年货
中国的新年习俗由来已久。全国各地的新年习俗多种多样。
（2）Sweeping dust
In the folk, on the eve of the new year, there is a custom of "sweeping the dust on the 24th of the twelfth lunar month (also known as sweeping the house)." The folk saying is "24, sweep the house". People call it "Sweeping Day".
译文：扫尘
在民间，除夕之夜有“腊月二十四扫尘（亦称扫屋）”的习俗，民间有“二十四扫屋”的说法。人们称之为“扫尘日”。
2、圣诞节传统民俗：
（1）christmas tree
译文：圣诞树
Christmas tree is one of the most famous traditions in Christmas celebration.
Usually, people bring an evergreen plant such as pine into the house or outdoors around Christmas, and decorate it with Christmas lights and colorful decorations. And put an angel or a star on the top of the tree.
译文：圣诞树是圣诞节庆祝活动中最著名的传统之一。通常，人们会在圣诞节前后把松树等常绿植物带进屋子或户外，用圣诞灯和五颜六色的装饰品来装饰。把天使或星星放在树顶上。
（2）Christmas card
译文：圣诞卡
Christmas cards (Christmas cards) are popular in the United States and Europe. Many families bring annual family photos or family news with them. The news generally includes the advantages and specialties of family members in the past year.
译文：圣诞卡在美国和欧洲很流行。许多家庭每年都会带上家庭照片或家庭新闻。新闻通常包括过去一年家庭成员的优点和特长。
参考资料来源：百度百科-春节
参考资料来源：百度百科-圣诞节
The name Christmas is short for “Christ’s Mass,’’ A Mass is a kind of church service. Christmas is a religious festival. It is the day we celebrate as the birthday of Jesus. There are special Christmas services in Christian churches all over the world. But many of the festivities of Christmas do not have anything to do with religion. Exchanging gifts and sending Christmas cards are modern ways of ** the Christmas season merry.
Chritmas is the day that Jesus Christ was born. people in the world celebrate and worship this day in his honor. The santa claus will come out and send presents for children. Christmas cards and decorated trees are all over the place. The carolling of Christmas songs echo through the air. I am not a Chirstian, but I also enjoy the atmosphere of Chrismas. I wish everybody have a merry Chirismas.
the Spring Festival
1
Far and away the most important holiday in China is Spring Festival, also known as the Chinese New Year. To the Chinese people it is as important as Christmas to people in the West. the dates for this annual celebration are determined by the lunar calendar rather than the GREgorian calendar, so the timing of the holiday varies from late January to early February.
To the ordinary Chinese, the festival actually begins on the eve of the lunar New Year’s Day and ends on the fifth day of the first month of the lunar calendar. But the 15th of the first month, which normally is called the Lantern Festival, means the official end of the Spring Festival in many parts of the country.
2
Spring Festival is the most importantand popular festival in China.Before Spring Festival ,the people usually clean and decorate their houses.And they go to the Flower Fairs to buy some flowers.During Spring Festival ,the adults usually give lucky money to children.People often get together and have a big meal.Some people eat dumpling for dinner.
I love Spring Festival .
翻译：春节与圣诞节
圣诞节的由来是 "**的弥撒,"， 一次弥撒是一种种类的教堂礼拜。圣诞节是一个宗教节日。这一天，我们作为庆祝耶稣的生日。在**教徒教堂中在全世界有特殊圣诞节服务.但是很多圣诞节的节日没有随着和宗教有关任何事情.圣诞节季节**的现代方式是交换礼物和寄送圣诞卡欢乐.
圣诞是一天耶稣**诞生了。人在世界上庆祝和礼拜这一天，在他的荣誉。圣诞老人会出来，并送礼物给儿童。圣诞贺卡和装饰树木是任何其他地方。该carolling(不懂)的圣诞歌曲回声透过空气。我不是一个chirstian (不懂)，但我也享受圣诞的气氛。我想大家有一个快乐圣诞节 。
春节
一
到目前为止，最重要的节日，在中国是一个春节，也被称为中国新年的开始。对中国人民它象圣诞节对西方人一样，日期为这项一年一度的庆祝活动是由农历而不是公历，所以时间的假期不同，从1月下旬至2月上旬。对于一般中国人来说，节日其实是开始于除夕新年第一天结束了第五天的第一个月的农历。但15日的第一个月，通常被称为元宵节，意味着正式结束春节，在许多国家的部份。
二
在中国春节是最重要流行节日.在春节之前，人们通常清洁和装修房间.还有他们到花卉展览会，以购买一些花.在春节的时候，大人通常给小孩红包.人们经常聚在一起，吃一顿大餐。许多人晚餐吃饺子。
我爱的春节。本回答被提问者采纳
However, the Chinese Spring Festival has no religious background while Christmas has something to do with God and there is Santa Claus to bring children gifts. The westerners send each other Christmas cards for greetings while the Chinese people make a call or pay a visit on each other. On Boxing Day when is just right after Christmas, there are a plenty of stuff on sale, but very few in the Chinese Spring Festival.