etiolated vs unfavourable

etiolated

adj
  • Lacking in vigour; anemic, feeble. 

  • Of a plant: intentionally grown in the dark. 

  • Of an animal or person: having an ashen or pale appearance; also, haggard or thin; physically weak. 

  • Of a plant or part of a plant: pale and weak because of sunlight deprivation or excessive exposure to sunlight. 

unfavourable

adj
  • Not auspicious; ill-boding. 

  • Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement. 

  • Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable. 

  • Of a belief, state of mind, etc.: not favourable; disapproving. 

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