chop steak vs hamburger steak

chop steak and hamburger steak both are nouns.

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

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

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

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