"vegetation" in the noun sense
1. vegetation, flora, botany
all the plant life in a particular region or period
"the flora of southern California"
"the botany of China"
the process of growth in plants
an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
inactivity that is passive and monotonous, comparable to the inactivity of plant life
"their holiday was spent in sleep and vegetation"
Source: WordNet® (An amazing lexical database of English)
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