once more vs upward

once more

adv
  • Again, a further time, once again. 

  • Used other than figuratively or idiomatically: see once, more. 

upward

adv
  • Yet more; indefinitely more; above; over. 

  • In a direction from lower to higher; toward a higher place; in a course toward the source or origin 

  • In the upper parts; above. 

adj
  • Directed toward a higher place. 

How often have the words once more and upward occurred in a corpus of books? (source: Google Ngram Viewer )