largely vs materially

largely

adv
  • On a large scale; amply. 

  • For the most part; mainly or chiefly. 

  • In a widespread or large manner. 

materially

adv
  • To a significant degree. 

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

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