A pruning knife is a cutting tool used for pruning trees, shrubs, and plants. The most common synonyms for pruning knife are pruning shears, secateurs, hand pruners, and loppers. Pruning shears and hand pruners are the smallest of this group, designed for trimming smaller branches and twigs. Secateurs and loppers are larger and more powerful, used for pruning thicker branches and stems. While these tools may differ in size and shape, they all serve the same purpose. When choosing which tool to use for a particular job, consider the size of the branch or stem and the level of control needed to make the necessary cuts.