coronate vs strengthen

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. 

strengthen

verb
  • To empower; to give moral strength to; to encourage; to enhearten. 

  • To make strong or stronger; to add strength to; to increase the strength of; to fortify. 

  • To reinforce, to add to, to support (someone or something) 

  • To grow strong or stronger. 

  • To substantiate; to corroborate (a belief, argument, etc.) 

  • To augment; to improve; to intensify. 

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