Read the dictionary definition of vegetation. All definitions for this word.
1. inactivity that is passive and monotonous, comparable to the inactivity of plant life
1. their holiday was spent in sleep and vegetation
2. an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
3. all the plant life in a particular region or period
1. Pleistocene vegetation
2. the flora of southern California
3. the botany of China
4. the process of growth in plants