disinformation vs false rumor

disinformation

verb
  • To use disinformation. 

noun
  • Fabricated or deliberately manipulated content. Intentionally created conspiracy theories or rumors. 

  • False information intentionally disseminated to deliberately confuse or mislead; intentional misinformation. 

false rumor

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