categorically vs incontrovertibly

categorically

adv
  • In a categorical manner. 

  • Absolutely, by all means; truly. 

  • By the use of categories. 

incontrovertibly

adv
  • In an incontrovertible manner; in a manner not capable of being denied, challenged, or disputed. 

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