though vs wherefore

though

adv
  • Despite that; however. 

  • Used to intensify statements or questions; indeed. 

conj
  • Despite the fact that; although. 

wherefore

adv
  • Therefore. 

noun
  • An intent or purpose; a why. 

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