biopsy vs exam

biopsy

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

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

exam

verb
  • Shortened form of examine 

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