in earnest vs substantially

in earnest

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

  • Having a sincere intent. 

adj
  • Sincere; determined; truthful. 

substantially

adv
  • In a strong substantial manner; considerably. 

  • Without material qualifications. 

  • To a great extent; in essence; essentially. 

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