alopecia vs depilatory

alopecia

noun
  • Loss of hair (especially on the head) or loss of wool or feathers, whether natural or caused by disease. 

  • Baldness. 

  • Deficiency of the hair, which may be caused by failure to grow or loss after growth. 

depilatory

noun
  • A preparation that removes hair from the body. 

adj
  • That removes hair 

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