Blackjack and Jacks

Blackjack 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.

Jacks and blackjack are semantically related. In some cases you can replace term "Jacks" with "Blackjack", this nouns are similar.

Jacks noun - A game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball.

Blackjack and jacks are semantically related. Sometimes you can use "Blackjack" instead a noun "Jacks".