reiterate vs relaunch

reiterate

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

  • To say or do (something) repeatedly. 

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

adj
  • Reiterated; repeated. 

relaunch

verb
  • To launch again. 

noun
  • The act or fact of launching again. 

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