paper fastener vs sprig

paper fastener

noun
  • A stationery fastening device made of thin, soft metal, with a round head and a flat, split shank, which is spread after insertion in a hole in a stack of pages, in much the same way as a cotter pin or a split rivet. 

  • Any similar stationery fastening device. 

sprig

noun
  • A small eyebolt ragged or barbed at the point. 

  • A youth; a lad. 

  • A small shoot or twig of a tree or other plant; a spray. 

  • An ornament resembling a small shoot or twig. 

  • One of the separate pieces of lace fastened on a ground in applique lace. 

  • A brad, or nail without a head. 

  • A house sparrow. 

verb
  • To decorate with sprigs, or with representations of sprigs, as in embroidery or pottery. 

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