corroboration vs data

corroboration

noun
  • That which corroborates. 

  • The act of corroborating, strengthening, or confirming; addition of strength; confirmation 

data

noun
  • A representation of facts or ideas in a formalized manner capable of being communicated or manipulated by some process. 

  • Information, especially in a scientific or computational context, or with the implication that it is organized. 

  • Recorded observations that are usually presented in a structured format. 

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