deforestation vs logging

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. 

logging

noun
  • An act or instance of logging (cutting trees). 

  • An act or instance of logging (making an entry in a log). 

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