cet arbre-là
A pine tree is 'un pin' in French.
a tree surgon is called 'un élagueur' in French, from the verb: 'élaguer'.
cocottier
Sucre i think
erable arbre
un mûrier
un châtaignier
Quel Bel Arbre
un arbre généalogique
tree tops are in French "la cime des arbres"
Tree would be arbre in french. For two and more trees, one simply adds an s, getting arbres.
Un arbre généalogique