chockablock vs chockful

chockablock

adv
  • In a crowded manner; as completely or closely as possible. 

adj
  • Having the blocks drawn close together so no further movement is possible, as when the tackle is hauled to the utmost. 

  • Jammed tightly together, jam-packed; very crowded; completely filled or stuffed. 

chockful

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