asyndeton vs haplography

asyndeton

noun
  • A stylistic scheme in which conjunctions such as "or" and "and" are deliberately omitted from a series of words, phrases, or clauses. 

haplography

noun
  • Accidental omission of a letter or letter group that should be repeated in writing, for example, mispell for misspell. 

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