bethink vs chew the cud

bethink

verb
  • To meditate, ponder; to consider. 

  • To determine, resolve. 

  • To think of (something or somebody) or that (followed by clause); to remind oneself, to consider, to reflect upon. 

chew the cud

verb
  • To meditate or ponder before answering; to be deep in thought; to ruminate. 

  • To ruminate (of ruminant animals). 

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