dejection vs mulligrubs

dejection

noun
  • A state of melancholy or depression; low spirits, the blues. 

  • The act of humbling or abasing oneself. 

  • A low condition; weakness; inability. 

mulligrubs

noun
  • low spirits, mild depression, the blues 

  • sullenness; sulky behaviour 

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