accustomed vs prevalent

accustomed

adj
  • Familiar through use; usual; customary. 

  • Familiar with something through repeated experience; adapted to existing conditions. 

prevalent

adj
  • Widespread or preferred. 

  • Superior in frequency or dominant. 

noun
  • A species that is prevalent in a certain area. 

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