Christmas tree is typically called a "Christmas tree." However, it can also be referred to as a "yule tree," a "tannenbaum," or a "christmas palm." The word "christmas" comes from the Old English word "crīstes mæsse," which means "Christ's mass." The word "tree" comes from the Old Norse word "trēr," which means "wood" or "timber." Together, these words form the name "Christmas tree," which refers to the evergreen tree that is traditionally used as a decoration during the Christmas season.