put asunder vs sunder

put asunder

verb

  • To sunder; disjoin; separate. 

sunder

verb

  • To part, separate. 

  • To break or separate or to break apart, especially with force. 

noun

  • a separation into parts; a division or severance 

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