dumdum vs naïf

dumdum

noun

  • An ignorant person; an idiot. 

  • A soft-nosed bullet that expands on impact to cause a gaping wound. 

naïf

noun

  • One who is naive. 

adj

  • Naive. 

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