what kind of tree is a christmas tree

I'm an evergreen tree, typically a pine or a fir, but there are many other varieties that are used as well. I am typically decorated with lights, ornaments, and a star or an angel at the top to represent the star of Bethlehem. I also often have tinsel or garlands wrapped around me to add to my festive appearance. I am typically decorated during the Christmas season, but some people also decorate me during other holidays or special occasions, such as birthdays or anniversaries.