fluctuation vs repose

fluctuation

noun
  • A wavering; unsteadiness. 

  • In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion. 

  • A motion like that of waves; a moving in this and that direction. 

repose

noun
  • quietness; ease; peace; calmness. 

  • A form of visual harmony that gives rest to the eye. 

  • The period between eruptions of a volcano. 

verb
  • To die, especially of a saint. 

  • To pose again. 

  • To compose; to make tranquil. 

  • To remain or abide restfully without anxiety or alarms. 

  • To lie at rest; to rest. 

  • To lay, to set down. 

  • To lie; to be supported. 

  • To place, have, or rest; to set; to entrust. 

  • To reside in something. 

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