"forests" in the noun sense
1. forest, wood, woods
the trees and other plants in a large densely wooded area
2. forest, woodland, timberland, timber
land that is covered with trees and shrubs
"forests" in the verb sense
1. afforest, forest
establish a forest on previously unforested land
"afforest the mountains"
Source: WordNet® (An amazing lexical database of English)
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