steak tartare vs tartar steak

steak tartare and tartar steak both are nouns.

Word	Noun	Adjective	Verb	Adverb
steak tartare	Yes	No	No	No
tartar steak	Yes	No	No	No

As nouns, steak tartare and tartar steak are synonyms defined as:

steak tartare and tartar steak: ground beef mixed with raw egg and e.g. onions and capers and anchovies; eaten raw

Other synonyms of steak tartare include cannibal mound.

steak tartare (noun)	tartar steak (noun)
ground beef mixed with raw egg and e.g. onions and capers and anchovies; eaten raw	ground beef mixed with raw egg and e.g. onions and capers and anchovies; eaten raw