Black jack and Vingt-et-un

Vingt-et-un and black jack are semantically related. In some cases you can use "Vingt-et-un" instead a noun phrase "Black jack".

Vingt-et-un noun - A gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21.

Black jack and vingt-et-un are semantically related. Sometimes you can replace phrase "Black jack" with "Vingt-et-un", this phrases are similar.