herd together vs procure

herd together

verb
  • To push people or animals into a group, as a herd. 

procure

verb
  • To induce or persuade someone to do something. 

  • To obtain a person as a prostitute for somebody else. 

  • To acquire or obtain. 

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