liefer vs normally

liefer

adv
  • Preferentially, rather 

normally

adv
  • In the expected or customary manner. 

  • In the manner of a variable with a Gaussian distribution. 

  • Under normal conditions or circumstances; usually; most of the time 

  • To a usual or customary extent or degree. 

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