The poplar tree is a species of tree that is found in many parts of the world. It is a fast-growing tree and is often used for timber, pulp, and fuel. Other related species of poplar trees include the ASPEN (5 letters), ALAMO (5 letters), and ABELE (5 letters). ASPEN is a species of poplar tree native to North America, while ALAMO and ABELE are both species of poplar tree native to Europe. All three species of poplar tree are known for their tall, straight trunks and their ability to grow quickly.