blue
branch
celebration
christmas
christmastree
conifer
crown
december
ecology
environment
evergreen
festive
fir
firtree
flora
forest
green
grow
growth
holiday
icon
isolated
landscape
merry
natural
nature
needle
new year
noel
object
outdoor
pine
plant
season
set
spruce
tradition
tree
trunk
two
vacation
verdure
view
wildlife
winter
wood
x mas
xmas
yule