steak au poivre vs pepper steak

steak au poivre and pepper steak both are nouns.

Word	Noun	Adjective	Verb	Adverb
steak au poivre	Yes	No	No	No
pepper steak	Yes	No	No	No

As nouns, steak au poivre and pepper steak are synonyms defined as:

steak au poivre and pepper steak: steak covered with crushed peppercorns pan-broiled and served with brandy-and-butter sauce

Other synonyms of steak au poivre include peppered steak.

steak au poivre (noun)	pepper steak (noun)
steak covered with crushed peppercorns pan-broiled and served with brandy-and-butter sauce	strips of steak sauteed with green peppers and onions
	steak covered with crushed peppercorns pan-broiled and served with brandy-and-butter sauce