ofttimes vs routinely

ofttimes

adv
  • (elsewhere, archaic) often, frequently 

routinely

adv
  • In a routine manner, in a way that has become common or expected. 

  • Done by rote or habit, as part of a routine, without attention or concern. 

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