chock-full vs cram full

chock-full and cram full both are adjectives.

Word	Noun	Adjective	Verb	Adverb
chock-full	No	Yes	No	No
cram full	No	Yes	No	No

As adjectives, chock-full and cram full are synonyms defined as:

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

chock-full (adjective)	cram full (adjective)
packed full to capacity	packed full to capacity