incomplete vs second 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. 

second string

noun
  • A unit of players which is considered to have a secondary level of talent and which usually plays after the first string. 

adj
  • Not as good; of a lower quality or condition. 

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