cram full vs chockablock

cram full and chockablock both are adjectives.

Word	Noun	Adjective	Verb	Adverb
cram full	No	Yes	No	No
chockablock	No	Yes	No	No

As adjectives, cram full and chockablock are synonyms defined as:

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

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