fibre optics vs fibreglass

fibre optics

noun
  • The transmission of light through fine flexible glass or plastic fibres, especially as a medium for communications networks. 

fibreglass

noun
  • A composite material made from fine fibres of spun glass held together with resin. 

  • Silica based glass extruded into fibers that possess a length at least 1000 times greater than their width. 

verb
  • To apply fibreglass to. 

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