lew vs unconcerned

lew

adj
  • Sickly-looking, pale, wan. 

  • Weak. 

  • Lukewarm, tepid. 

  • Alee: protected from the wind. 

noun
  • Warmth, heat. 

  • A shelter from the wind, particularly temporary structures raised by shepherds to protect their flocks. 

verb
  • To make warm or lukewarm. 

  • To shelter from the wind. 

unconcerned

adj
  • Indifferent and having no interest; aloof. 

  • Not anxious, apprehensive, or worried. 

  • Having no involvement. 

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