helter-skelter vs quagmire

helter-skelter

noun
  • Confusion or turmoil. 

  • A helical fairground slide. 

adv
  • In confused, disorderly haste. 

adj
  • Carelessly hurried and confused. 

quagmire

noun
  • A perilous, mixed up and troubled situation; a hopeless tangle. 

  • A swampy, soggy area of ground. 

verb
  • To embroil (a person, etc.) in complexity or difficulty. 

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