The crossword solutions for the term ORANGE OR OLIVE are 'TREE'. A tree is a perennial plant with an elongated stem, or trunk, supporting branches and leaves in most species. Trees are a common feature of the natural landscape and are an important source of food, oxygen, and shelter for many species of animals and plants. Trees also provide shade and protection from the elements. Orange and olive trees are two of the most popular types of trees grown in many parts of the world. Orange trees produce sweet, juicy oranges while olive trees produce olives, which are used to make olive oil.