parted vs separated

parted

adj
  • Separated; taken asunder. 

  • Having the specified number of parts. 

  • Deeply cleft. 

separated

adj
  • Detached; not connected or joined; two or more things stand apart. 

  • Estranged; living apart but not divorced. 

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