excurse vs wallow in the mire

excurse

verb
  • To digress. 

  • To journey or pass through. 

wallow in the mire

verb
  • To revel in baseness or scandal. 

  • Used other than figuratively or idiomatically: see wallow, mire. 

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