There are several synonyms for the term "woody plant," which refers to any plant that has a hard stem, branches, and twigs with true bark produced by secondary growth. Some common synonyms include "tree," "shrub," "bush," "sapling," and "vine." Trees are tall, perennial, woody plants with a single, dominant stem or trunk supporting branches and leaves above ground. Shrubs, in contrast, are shorter and more bushy, with multiple stems that emerge from the ground. Bushes are similar to shrubs, but generally smaller in size and often have a dense, rounded shape. Saplings are young trees that have not yet matured, while vines are plants that climb or trail along the ground and other objects using tendrils or other specialized structures.