congenerous vs related

congenerous

adj
  • Having the same (kind of) origin or action 

  • Belonging to the same taxonomic genus; congeneric 

related

adj
  • Standing in relation or connection. 

  • Fulfilling a relation. 

  • Being a relative of. 

  • Narrated; told. 

  • Synonym of relative. 

  • Having a relationship with the thing named 

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