fibreglass vs windowpane

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. 

windowpane

noun
  • A piece of glass filling a window or a section of a window 

  • A gelatin base tab with LSD. 

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