nipple vs pap

nipple

noun
  • A pointing stick. 

  • The projection of a mammary gland from which, on female mammals, milk is secreted. 

  • A mechanical device through which liquids or gases can be passed in a regulated manner. 

  • Any small physical protrusion, such as the lumps on the F and J keys on computer keyboards. 

  • A perforated segment that fits into part of the breech of a muzzle-loading gun, on which the percussion cap is fixed. 

  • Any small physical protrusion on an automotive, a machine part or any other part that fits into a groove on another part. 

  • An internally threaded piece which holds a bicycle spoke in place on the rim. 

  • A short tube threaded at both ends, used as a connector. 

  • An artificial nipple (definition 1) used for bottle-feeding infants. 

verb
  • To fit (a baby's bottle, etc.) with a nipple. 

  • To give one's nipple to (a baby) to allow breastfeeding. 

pap

noun
  • A rounded, nipple-like hill or peak. 

  • Nonsense; pablum. 

  • The pulp of fruit. 

  • Pap smear 

  • Food in the form of a soft paste, often a porridge, especially as given to very young children. 

  • Pa; father. 

  • Porridge. 

  • Support from official patronage. 

adj
  • Flat. 

  • Spineless, wet, without character. 

verb
  • Of a paparazzo, to take a surreptitious photograph of (someone, especially a celebrity) without their consent. 

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