recur vs reenter

recur

verb
  • To happen again. 

  • To recurse. 

  • To come to the mind again. 

reenter

verb
  • To enter again; return into. 

  • To enter again; retype, reinput. 

  • To cut deeper where the aqua fortis has not bitten sufficiently. 

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