The term 'tree' encompasses a wide variety of plants, from the tulip tree (5 letters) to the FIR (3 letters), ELM (3 letters), ELDER (5 letters), OAK (3 letters), upa (3 letters), els (3 letters), FIG (3 letters), LOG (3 letters), SAP (3 letters), ASH (3 letters), YEW (3 letters), ACER (4 letters), BOLE (4 letters), TRAP (4 letters), WOOD (4 letters), PALM (4 letters), PINE (4 letters), TEAK (4 letters), ALDER (5 letters), ASPEN (5 letters), BLOCK (5 letters), CHUNK (5 letters), ELECT (5 letters), LARCH (5 letters), PIECE (5 letters), ROWAN (5 letters), SIGHT (5 letters), STICK (5 letters), TRUNK (5 letters), BEECH (5 letters), CEDAR (5 letters), crner (5 letters), hemin (5 letters), MAPLE (5 letters), PEACH (5 letters), PECAN (5 letters), ACACIA (6 letters), COLLAR (6 letters), LAUREL (6 letters), LENGTH (6 letters), POPLAR (6 letters), SPRUCE (6 letters), TIMBER (6 letters), WILLOW (6 letters), CORNER (6 letters), LINDEN (6 letters), LOCUST (6 letters), STYMIE (6 letters), CONIFER (7 letters). Trees are an important part of the natural environment, providing oxygen, habitat for wildlife, and resources for humans.