incomplete vs third string

incomplete

noun
  • A multiplayer game that is abandoned because one player disconnects. 

  • A designation of being incomplete. 

  • A multipart file posted to Usenet that is incomplete and thus unusable. 

adj
  • Not complete; not finished 

  • Of a flower, wanting any of the usual floral organs. 

third string

noun
  • A unit of players that plays behind the first and second strings; a junior varsity team. 

adj
  • Of a decidedly lower quality or condition. 

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