headaches vs malaise

headaches

malaise

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

  • An ambiguous feeling of mental or moral depression. 

  • Ill will or hurtful feelings for others or someone. 

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