What is the difference between tree trimming and pruning?

Through trimming, a professional brings out the beauty of a tree by shaping it desirably. When left on their own, trees can become unwieldy because branches grow to any shape and direction. This may make your yard look ugly and even reduces your property’s curb appeal.
Pruning, on the other hand, is not only focused on the beauty of the plant but on its health as well. The practice helps trees to prevent illnesses and disease-causing insects. While pruning, a professional removes dead and sick parts of a tree. The professional can also remove poorly-formed branches from the tree. Trimming and pruning is advised to be done every 1-2 years.