herb vs papilla

herb

noun
  • A plant whose stem is not woody and does not persist beyond each growing season 

  • Cannabis. 

  • A lame or uncool person. 

  • Any green, leafy plant, or parts thereof, used to flavour or season food. 

  • A plant whose roots, leaves or seeds, etc. are used in medicine. 

papilla

noun
  • A small fleshy projection on a plant. 

  • Any of the small protuberances on the upper surface of the tongue often containing taste buds. 

  • A vascular process of connective tissue extending into and nourishing the root of a hair, feather, or developing tooth. 

  • Any of the vascular protuberances of the dermal layer of the skin extending into the epidermal layer and often containing tactile corpuscles. 

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