coronate vs happen

coronate

verb
  • To crown (a sovereign). 

adj
  • Having a crest or a crownlike appendage. 

  • Having the coronal feathers lengthened or otherwise distinguished. 

  • Having or wearing a crown; crowned. 

  • Girt about the spire with a row of tubercles or spines. 

happen

verb
  • To occur or take place. 

  • To do or occur by chance or unexpectedly. 

  • To encounter by chance. 

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