recheck vs reiterate

recheck

verb
  • To check again. 

noun
  • The act of checking again; reverification. 

reiterate

verb
  • To say or do (something) for a second time, such as for emphasis. 

  • To say or do (something) repeatedly. 

adj
  • Reiterated; repeated. 

noun
  • A tree with vertical branches alongside the main trunk and which continue to grow upwards. 

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