abruptly vs helter-skelter

abruptly

adv
  • In an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously. 

helter-skelter

adv
  • In confused, disorderly haste. 

adj
  • Carelessly hurried and confused. 

noun
  • A helical fairground slide. 

  • Confusion or turmoil. 

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