Tree removal professional is the one that makes his/her living taking care of trees in residential areas, or even factories or companies. Having to use a tree service can mean that you have dying or dead trees that need to be removed before they become a hazard.
It is very important to note that not all companies who offer a tree service operate identically so make sure that you are hiring a certified tree and stump removal company that is able to take care of the needs for the trees you are concerned about. All companies should be insured and bonded.
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If you need to have tree care for your live trees you want to be sure that the company has the knowledge to care for these trees. They should also know how to safely remove any dead branches without damaging the live tree and they know how to do selective topping and pruning.
The owner and employees should also be an arborist, who is a professional that knowledge to care for a variety of trees. If you hire an individual or company is not an arborist you could inadvertently hire someone that will botch your trees and cause them to possibly become diseased, die, or grown unshapely.