dowel vs treenail

dowel

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

  • 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 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. 

treenail

noun
  • A wooden peg or pin used as a fastener. 

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