Columbian vs loco weed

Columbian

noun
  • A stamp from the Columbian Issue stamps. 

  • An inhabitant of any place called Columbia. 

  • An American, a person from the United States of America. 

adj
  • American, from the United States of America 

  • Of or pertaining to Christopher Columbus, an explorer who introduced greatly widened contacts between Eurasia and the Americas, or his life or time. 

  • Of or from any of the places called Columbia. 

loco weed

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