helter-skelter vs misgiving

helter-skelter

noun

  • Confusion or turmoil. 

  • A helical fairground slide. 

adv

  • In confused, disorderly haste. 

adj

  • Carelessly hurried and confused. 

misgiving

noun

  • doubt, apprehension, a feeling of dread 

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