down for the count vs out on one's feet

down for the count

adj
  • Unconscious or sound asleep. 

  • Decisively beaten; defeated; rendered irrelevant for the long term. 

out on one's feet

adj
  • Stupefied; dazed; nonfunctional. 

  • Standing erect but not consciously aware of one's surroundings, or only minimally aware, and having little or no ability to control one's bodily actions, as a result of physical injury or exhaustion. 

How often have the words down for the count and out on one's feet occurred in a corpus of books? (source: Google Ngram Viewer )