chockablock vs chockful

chockablock and chockful both are adjectives.

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

As adjectives, chockablock and chockful are synonyms defined as:

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

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