congeneric vs related

congeneric

adj
  • Of or pertaining to congeners (organisms of the same genus) 

related

adj
  • Synonym of relative. 

  • Fulfilling a relation. 

  • Standing in relation or connection. 

  • Being a relative of. 

  • Narrated; told. 

  • Having a relationship with the thing named 

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