Heaves and Jacks

Heaves noun - A chronic emphysema of the horse that causes difficult expiration and heaving of the flanks.

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

Heaves and jacks are semantically related. Sometimes you can use "Heaves" instead a verb "Jacks".