disentangle vs interrelate

disentangle

verb
  • To unravel; to separate into discrete components or units. 

  • To become free or untangled. 

  • To free something from entanglement; to extricate or unknot. 

interrelate

verb
  • To form relationships between multiple things. 

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