chock full vs plenary

chock full

adj
  • Containing the maximum amount possible, flush on all sides, jam-packed, crammed. 

plenary

adj
  • Complete; full; entire; absolute. 

  • Fully attended; for everyone's attendance. 

noun
  • Part of a lesson, usually at or towards the end, designed to review or evaluate the learning that has taken place. 

  • plenary session 

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