body hair vs cilium

body hair

noun
  • An individual strand of such hair. 

  • Hair of the body; in particular, androgenic hair, to the exclusion of facial hair and the hair atop one's head. 

cilium

noun
  • Hairs or similar protrusions along the margin of an organ. 

  • One of the fine hairs along an insect's wing. 

  • An eyelash. 

  • A short microscopic hairlike organelle projecting from a eukaryotic cell (such as a unicellular organism or one cell of a multicelled organism) which serve either for propulsion by causing currents in the surrounding fluid or as sensors. 

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