clear up vs elude

clear up

verb
  • To clarify, to correct a misconception. 

  • To depart or disappear. 

  • To clean up. 

  • To become free of certain blemishes. 

  • Of stormy weather, to dissipate, to become calm. 

  • To pot all of the remaining balls in a single turn. 

elude

verb
  • To escape being understandable to; to be incomprehensible to. 

  • To escape someone's memory, to slip someone's mind. 

  • To evade or escape from (someone or something), especially by using cunning or skill. 

  • To shake off (a pursuer); to give someone the slip. 

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