emollient vs humble plant

emollient

noun
  • Something which softens or lubricates the skin; moisturizer. 

  • Anything soothing the mind, or that makes something more acceptable. 

adj
  • Moisturizing. 

  • Soothing or mollifying. 

humble plant

noun
  • sensitive plant (Mimosa pudica). 

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