papilla vs tit

papilla

noun
  • 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. 

  • A small fleshy projection on a plant. 

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

tit

noun
  • A mammary gland, teat. 

  • A person's breast or nipple. 

  • A chickadee; a small passerine bird of the genus Parus or the family Paridae, common in the Northern Hemisphere. 

  • An idiot; a fool. 

  • A morsel; a bit. 

  • A police officer; a "tithead". 

  • Any of various other small passerine birds. 

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