grout vs sett

grout

noun
  • A thin mortar used to fill the gaps between tiles and cavities in masonry. 

verb
  • To insert mortar between tiles. 

  • To affix with mortar. 

sett

noun
  • A small, square-cut piece of quarried stone used for paving and edging. 

  • The pattern of distinctive threads and yarns that make up the plaid of a Scottish tartan. 

  • The number of warp ends per inch in the cloth. 

  • The system of tunnels that is the home of a badger. 

  • The number of reeds or splits per inch – one half the number of ends per inch. 

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