chockful vs chockablock

chockful and chockablock both are adjectives.

Word	Noun	Adjective	Verb	Adverb
chockful	No	Yes	No	No
chockablock	No	Yes	No	No

As adjectives, chockful and chockablock are synonyms defined as:

Other synonyms of chockful include chock-full, choke-full, chuck-full, cram full.

chockful (adjective)	chockablock (adjective)
packed full to capacity	packed full to capacity