as soon as vs though

as soon as

conj
  • Used other than figuratively or idiomatically: see as, soon. 

  • Used to indicate that the first action mentioned is as likely as, or is preferred to, the second action mentioned. 

  • At the moment when; immediately after. 

prep
  • Used other than figuratively or idiomatically: see as, soon. 

though

conj
  • Despite the fact that; although. 

adv
  • Used to intensify statements or questions; indeed. 

  • Despite that; however. 

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