deforestation vs reforestation

deforestation

noun
  • The process of destroying a forest and replacing it with something else, especially with an agricultural system. 

  • A transformation to eliminate intermediate data structures within a program. 

reforestation

noun
  • The act or process of replanting a forest, especially after clear-cutting. 

How often have the words deforestation and reforestation occurred in a corpus of books? (source: Google Ngram Viewer )