rebound vs reflux

rebound

verb
  • To send back; to reverberate. 

  • To bound or spring back from a force. 

  • To give back an echo. 

  • To jump up or get back up again. 

noun
  • A return to health or well-being; a recovery. 

  • An effort to recover from a setback. 

  • The strike of the ball after it has bounced off a defending player or the crossbar or goalpost. 

  • A romantic partner with whom one begins a relationship (or the relationship one begins) for the sake of getting over a previous, recently ended romantic relationship. 

  • An instance of catching the ball after it has hit the rim or backboard without a basket being scored, generally credited to a particular player. 

  • The recoil of an object bouncing off another. 

  • The period of getting over a recently ended romantic relationship. 

reflux

verb
  • To flow back or return. 

  • To boil a liquid in a vessel having a reflux condenser 

noun
  • A technique, using a reflux condenser, allowing one to boil the contents of a vessel over an extended period. 

  • The backwards flow of any fluid. 

  • The leaking of stomach acid up into the oesophagus. 

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