dowel vs safety pin

dowel

noun
  • A pin, or block, of wood or metal, fitting into holes in the abutting portions of two pieces, and being partly in one piece and partly in the other, to keep them in their proper relative position. 

  • A wooden rod, as one to make short pins from. 

  • A piece of wood or similar material fitted into a surface not suitable for fastening so that other pieces may be fastened to it. 

verb
  • To fasten together with dowels. 

  • To furnish with dowels. 

safety pin

noun
  • A pin in the form of a clasp, which has a guard to cover the sharp point; used to join two pieces of fabric, etc., together temporarily. 

  • The pin of a hand grenade, which prevents accidental detonation. 

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