relapse vs slalom

relapse

verb
  • To slip or slide back physically; to turn back. 

  • To fall back again; to slide or turn back into a former state or practice. 

  • To return to a vice, especially self-harm or alcoholism, failing to maintain abstinence. 

  • To recur; to worsen, be aggravated (after a period of improvement). 

noun
  • An occasion when a person becomes ill again after a period of improvement 

  • The act or situation of relapsing. 

slalom

verb
  • To move in a slalom-like manner. 

  • To race in a slalom. 

noun
  • A race or competition wherein participants each perform the sport of slalom. 

  • A course used for the sport of slalom. 

  • The sport of skiing in a zigzag course through gates. (Often used attributively) 

  • Any similar activity on other vehicles, including canoes and water skis. 

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