The common name for the study of plants is "botany." Botany encompasses various aspects of plant life, including their structure, growth, reproduction, and ecology. It is vital for understanding agriculture, horticulture, and the role plants play in ecosystems. Botanists study different plant species, their interactions with the environment, and their uses in medicine and food. The field also includes sub-disciplines like plant physiology and plant taxonomy, which classify and name plants. Overall, botany is crucial in addressing issues related to food security, biodiversity, and climate change.