glaucous vs sallow

glaucous

adj
  • Covered with a bloom or a pale powdery covering, regardless of colour. 

  • Of a pale grey or bluish-green, especially when covered with a powdery residue. 

sallow

adj
  • Having a similar pale, yellowish colour. 

  • Of a sickly pale colour. 

  • Foul; murky; sickly. 

  • Of a tan colour, associated with people from southern Europe or East Asia. 

  • Having skin (especially on the face) of a sickly pale colour. 

noun
  • A European willow, Salix caprea, that has broad leaves, large catkins and tough wood. 

  • A willow twig or branch. 

verb
  • To become sallow. 

  • To cause (someone or something) to become sallow. 

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