descendant vs genealogy

descendant

noun
  • A word or form in one language that is descended from a counterpart in an ancestor language. 

  • A language that is descended from another. 

  • A later evolutionary type. 

  • One of the progeny of a specified person, at any distance of time or through any number of generations. 

  • A thing that derives directly from a given precursor or source. 

adj
  • Proceeding from a figurative ancestor or source. 

  • Descending; going down 

  • Descending from a biological ancestor. 

genealogy

noun
  • The descent of a person, family, or group from an ancestor or ancestors; lineage or pedigree. 

  • The study, and formal recording of such descents. 

  • A record or table of such descent; a family tree. 

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