in the event vs though

in the event

conj
  • If, in the event that 

prep
  • As things (have) turned out or are turning out; ultimately; in the end; eventually. 

though

conj
  • Despite the fact that; although. 

adv
  • Used to intensify statements or questions; indeed. 

  • Despite that; however. 

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