assertive vs dogmatic

assertive

adj
  • Boldly self-assured; confident without being aggressive. 

dogmatic

adj
  • Asserting dogmas or beliefs in a superior or arrogant way; opinionated, dictatorial. 

  • Adhering only to principles which are true a priori, rather than truths based on evidence or deduction. 

  • Pertaining to dogmas; doctrinal. 

noun
  • One of an ancient sect of physicians who went by general principles; opposed to the empiric. 

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