Bluejacket and Jacks

Bluejacket noun - A serviceman in the navy.

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

Bluejacket and jacks are semantically related in sailor topic. Sometimes you can use "Bluejacket" instead a noun "Jacks".