rheum vs runny nose

rheum

noun
  • Watery or thin discharge of serum or mucus, especially from the eyes or nose, formerly thought to cause disease. 

  • Tears. 

  • Illness or disease thought to be caused by such secretions; a catarrh, a cold; rheumatism. 

runny nose

noun
  • A condition of discharge of mucus from the nose, often a symptom of the common cold. 

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