booked vs set-aside

booked

set-aside

adj

  • assigned for some purpose. 

  • taken out of agricultural production 

  • reserved or booked in advance 

noun

  • something that is set aside for a specific purpose 

  • land that has been taken out of agricultural production to reduce crop surpluses 

How often have the words booked and set-aside occurred in a corpus of books? (source: Google Ngram Viewer )