except vs for that matter

except

prep
  • with the exception of; but. 

verb
  • To exclude; to specify as being an exception. 

  • To take exception, to object (to or against). 

conj
  • With the exception (that); used to introduce a clause, phrase or adverb forming an exception or qualification to something previously stated. 

for that matter

prep
  • as far as that is concerned. 

How often have the words except and for that matter occurred in a corpus of books? (source: Google Ngram Viewer )