well, as worded your question can't be answered. trees are just one type of plant.
perhaps since your question is in the mistletoecategory you intended to ask "...between trees and mistletoe?". in which case the answer is none whatsoever, mistletoe is a parasite on trees stealing nutrients from them without giving anything back.
Parasitism
Tree frogs have a commensalism relationship with frogs. Frogs live in bromeliads, but bromeliads are not affected at all.
Tree frogs have a commensalism relationship with frogs. Frogs live in bromeliads, but bromeliads are not affected at all.
Symbiotic. Where the parasite returns something in exchange for living off the host. One of the most common forms of symbiotic parasite relationships is certain types of tree fungus. It derives all it's nutrition from the tree but in exchange protects the tree from certain types of insects. The fungus would not survive with out the tree but the tree would survive without the fungus. The fungus gives the tree something in return for it's survival therefore it is a symbiotic parasite.
flies biting a cow
the symbiotic relationship in the temperate woodlands and shrublands can be between an tree that supports fruit and a animal that eats it.
parasitism Pollination.
the symbiotic relationship between a squirrel and nut tree is the squirrel gets a home and food and the tree doesn't get any thing so it is commensalism.
Mistletoe is a parasitic plant that needs food from plants like the spruce to survive.
The spruce tree has a symbiotic relationship with the mistletoe. This symbiotic relationship is an example of parasitism since the mistletoe obtains water and nutrients from the spruce tree, putting it at risk of harm.
It is Commensalism because the squirrel benefits by having a home, and the tree is not harmed and doesn't get any benefit.
one symbiotic relationship is lichen and black spruce tree