biopsy vs examination

biopsy

noun
  • The removal and examination of a sample of tissue, cells, or bodily fluid from a living body for diagnostic purposes. 

verb
  • To take a sample (a biopsy) for pathological examination. 

examination

noun
  • Particularly, an inspection by a medical professional to establish the extent and nature of any sickness or injury. 

  • Interrogation, particularly by a lawyer in court or during discovery. 

  • The act of examining. 

  • A formal test involving answering written or oral questions under a time constraint and usually without access to textbooks; typically, a large, written test administered to high school and college students covering course material studied in a semester. 

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