congener vs fellow man

congener

noun
  • A person or thing similar in behavior or nature to another. 

  • Any of a group of structurally related compounds. 

  • Any of several alcohols, other than ethanol, that are found in fermented and distilled alcoholic drinks, and are partially responsible for their flavour and character. 

  • A plant or animal of the same taxonomic genus as another. 

fellow man

noun
  • A kindred member of humanity. 

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