helter-skelter vs nonplus

helter-skelter

noun
  • Confusion or turmoil. 

  • A helical fairground slide. 

adv
  • In confused, disorderly haste. 

adj
  • Carelessly hurried and confused. 

nonplus

noun
  • A state of bewilderment or perplexity. 

verb
  • To bewilder or perplex (someone); to confound, to flummox. 

How often have the words helter-skelter and nonplus occurred in a corpus of books? (source: Google Ngram Viewer )