Titanic vs bummer

Titanic

noun
  • A venture that fails spectacularly, especially one perceived as overconfident. 

name
  • The R.M.S. Titanic, an ocean liner, supposedly unsinkable, that sank on its maiden voyage on 15 April 1912 after colliding with an iceberg. 

adj
  • Of a conflict or contest: involving equally powerful participants. 

  • Of or relating to the Titans, a race of giant gods in Greek mythology. 

  • Having great size, or great force, power, or strength. 

bummer

noun
  • A disappointment, a pity, a shame. 

  • A lamb (typically the smallest of a multiple birth) which has been abandoned by its mother or orphaned, and as a consequence is raised in part or in whole by humans. 

  • A gay man. 

intj
  • Exclamation of annoyance or frustration at a bummer (disappointment). 

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