noneffective vs second string

noneffective

adj
  • Not effective. 

  • Not able to assume active duty. 

noun
  • A member of the military who is unable to assume active duty. 

second string

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

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

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