malaise vs mulligrubs

malaise

noun
  • An ambiguous feeling of mental or moral depression. 

  • A feeling of general bodily discomfort, fatigue or unpleasantness, often at the onset of illness. 

  • Ill will or hurtful feelings for others or someone. 

mulligrubs

noun
  • low spirits, mild depression, the blues 

  • sullenness; sulky behaviour 

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