What are the three things that makes a shrub different from other plants?

Shrubs are distinguished from other plants primarily by their multiple woody stems, which typically arise from the base, rather than a single trunk as seen in trees. They are generally shorter than trees, usually growing to a height of less than 6 meters (20 feet). Additionally, shrubs tend to have a bushy appearance with dense foliage, which allows them to thrive in a variety of environments and serve as important habitats for wildlife.