germane vs related

germane

adj
  • Related to a topic of discussion or consideration. 

noun
  • Any organic derivative of this compound. 

  • germanium tetrahydride, GeH₄ 

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 germane and related occurred in a corpus of books? (source: Google Ngram Viewer )