chock full vs overfull

chock full

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

overfull

adj
  • excessively filled; full to overflowing 

noun
  • A full house that beats someone else's full house. 

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