A Tree Lopper or an Arborist? How to know the difference

https://wiki-club.win/index.php?title=An_Arborist_or_Tree_Lopper%3F_How_to_Tell_them_apart

One of the very pressing needs after a thunderstorm is to really have the branches and leaves of the trees in a compound trimmed. Here a differentiation has to be produced between the Arborist and the tree lopper