attendant vs third string

attendant

noun
  • One who attends; one who works with or watches over something. 

  • That which accompanies or follows. 

  • A servant or valet. 

  • One who owes a duty or service to another. 

adj
  • Depending on, or owing duty or service to. 

  • Going with; associated; concomitant. 

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 attendant and third string occurred in a corpus of books? (source: Google Ngram Viewer )