Why does the Joshua tree be called a tree when it isn't one?

The Joshua tree is called a tree due to its tall, tree-like structure and branching growth pattern, even though it is actually a species of yucca, which is a type of succulent. Its name reflects its unique appearance, resembling a tree with its spiky leaves and elongated trunk. Additionally, its distinctive form and size contribute to its classification as a "tree" in common vernacular, despite its biological classification as a non-woody plant.