falling out vs helter-skelter

falling out

noun
  • A rift between people or groups, often following a disagreement or quarrel 

  • A culture-bound syndrome primarily reported in the southern United States and the Caribbean, described as a constricted consciousness as a psychological response to anxiety and stress. 

helter-skelter

noun
  • Confusion or turmoil. 

  • A helical fairground slide. 

adj
  • Carelessly hurried and confused. 

adv
  • In confused, disorderly haste. 

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