helter-skelter vs under any circumstances

helter-skelter

noun

  • A helical fairground slide. 

  • Confusion or turmoil. 

adv

  • In confused, disorderly haste. 

adj

  • Carelessly hurried and confused. 

under any circumstances

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