bummer vs cooperation

bummer

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

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. 

cooperation

noun
  • The act of cooperating. 

  • Association for mutual benefit, such as for purposes of production or purchase. 

  • Active help from a person, organization, etc., such as an orderly sharing of space or resources. 

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