in earnest vs materially

in earnest

adv
  • With considerable commitment, determination, or effect; significantly. 

  • Having a sincere intent. 

adj
  • Sincere; determined; truthful. 

materially

adv
  • To a significant degree. 

  • In a material manner; with regard to physical things or characteristics. 

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