林业 (lín yè) literally combines 林 (lín), meaning 'forest' or 'grove', and 业 (yè), meaning 'industry', 'profession', or 'field of work'. Together, they form the compound noun 'forestry' — the science, practice, and industry of managing, cultivating, conserving, and utilizing forests and their resources. It encompasses activities such as tree planting, timber harvesting, wildlife habitat protection, soil conservation, and sustainable forest management.

This term is commonly used in formal, academic, governmental, and environmental contexts — for example, in policy documents, university departments (e.g., a Forestry College), or national development plans. Unlike more colloquial terms like 种树 (zhòng shù, 'tree planting'), 林业 carries an institutional and systematic connotation, emphasizing long-term ecological and economic stewardship of wooded land.