this is English Holly, a staple of christmas decoration. It has dark, tough, spiky leaves and red berries. It is a shrub/small tree, and you do not traditionally kiss under it.
This is Mistletoe. Its leaves are long tear drop shapes, and it has white berries. It is a parasitic plant that grows in clumps that are similar to spheres on the branches of trees.
NOW GO FORTH AND DRAW YOUR SMOOCHING OCS