dubious vs fly ball

dubious

adj
  • Arousing doubt; questionable; open to suspicion. 

  • In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided. 

  • Generally considered imprecise or wrong, but not totally unplayable. 

fly ball

noun
  • A geek; beatnik. 

  • A batted ball that has been hit into the air above the outfield; a fly. 

How often have the words dubious and fly ball occurred in a corpus of books? (source: Google Ngram Viewer )