Boards and Backstop

Boards noun - The stage of a theater.

Backstop and boards are semantically related In some cases you can use "Backstop" instead a noun "Boards".

Backstop noun - (baseball) a fence or screen (as behind home plate) to prevent the ball from traveling out of the playing field.

Boards and backstop are semantically related in barrier used to enclose a piece of land topic. Sometimes you can use "Boards" instead a noun "Backstop".