inequivalently vs willy-nilly

inequivalently

adv
  • By means of, or in terms of an inequivalence 

willy-nilly

adv
  • Seemingly at random; haphazardly. 

  • Whether desired or not; without regard for the consequences or the wishes of those affected; whether willingly or unwillingly. 

adj
  • That happens whether willingly or unwillingly. 

How often have the words inequivalently and willy-nilly occurred in a corpus of books? (source: Google Ngram Viewer )