germane vs intertwined

germane

adj
  • Related to a topic of discussion or consideration. 

noun
  • Any organic derivative of this compound. 

  • germanium tetrahydride, GeH₄ 

intertwined

adj
  • Inextricably related or relevant. 

  • Twined or twisted together; entwined. 

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