subaltern vs third string

subaltern

adj
  • Of a lower rank or position; inferior or secondary; especially (military) ranking as a junior officer, below the rank of captain. 

  • Asserting only a part of what is asserted in a related proposition. 

noun
  • A subordinate. 

  • A subaltern proposition; a proposition implied by a universal proposition. 

  • A member of a group that is socially, politically and geographically outside of the hegemonic power structure of the colony and of the colonial homeland. 

  • A commissioned officer having a rank below that of captain; a lieutenant or second lieutenant. 

third string

adj
  • Of a decidedly lower quality or condition. 

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

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