pen in vs shut up

pen in

verb
  • To enclose (animals) in a pen. 

  • To schedule; fix a date for. 

  • To cause to be stuck in a situation; to be forced into a situation by circumstances. 

shut up

verb
  • To put (someone or something) in a secure enclosed space, such as a room or container. 

  • Of a person, to stop talking or (of a person or thing) making noise. 

  • To terminate (a business). 

  • To close (a building) so that no one can enter. 

adj
  • Closed up or off, as in a building that no one is to enter. 

intj
  • Stop talking, crying, etc. 

  • I don't believe it!, no way! 

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