Backstop and Fences

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

Fences and backstop are semantically related In some cases you can replace term "Fences" with "Backstop", this nouns are similar.

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