everwhere vs whenever

everwhere

adv

  • Wherever. 

  • Everywhere. 

whenever

adv

  • At any time. 

  • When ever: emphatic form of when. 

conj

  • When. 

  • Every time that. 

  • At any time that. 

  • Regardless of the time that. 

  • At the (single) time that, no matter when. 

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