bobbin vs shuttlecock

bobbin

noun
  • A spool or cylinder around which wire is coiled. 

  • A fine cord or narrow braid. 

  • The little rounded piece of wood at the end of a latch string, which is pulled to raise the latch. 

  • In a sewing machine, the small spool that holds the lower thread. 

shuttlecock

noun
  • A lightweight object that is conical in shape with a cork or rubber-covered nose, used in badminton the way a ball is used in other racquet games. 

verb
  • To move rapidly back and forth. 

  • To send or toss back and forth; to bandy. 

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