headline vs unimportance

headline

noun
  • The heading or title of a magazine or newspaper article. 

  • The top-billed attraction. 

  • A headrope. 

verb
  • To present as the main attraction; to have top billing, to be the main attraction. 

  • To give a headline to a page or section of a text. 

unimportance

noun
  • Lack of importance. 

How often have the words headline and unimportance occurred in a corpus of books? (source: Google Ngram Viewer )