Gallows and Jacks

Gallows noun - An instrument of execution consisting of a wooden frame from which a condemned person is executed by hanging.

Jacks and gallows are semantically related. In some cases you can replace term "Jacks" with "Gallows", 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.

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