pervasive vs systemic

pervasive

adj
  • Manifested throughout; pervading, permeating, penetrating or affecting everything. 

systemic

adj
  • Embedded within and spread throughout and affecting a whole system, group, body, economy, market, or society. 

  • Pertaining to an entire organism. 

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