hamburger steak vs chopped steak

hamburger steak and chopped steak both are nouns.

Word	Noun	Adjective	Verb	Adverb
hamburger steak	Yes	No	No	No
chopped steak	Yes	No	No	No

As nouns, hamburger steak and chopped steak are synonyms defined as:

Other synonyms of hamburger steak include beef patty, chop steak, chopsteak.

hamburger steak (noun)	chopped steak (noun)
a patty of ground cooked beef	a patty of ground cooked beef