Clappers and Tocsin

Clappers noun - A percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance.

Tocsin and clappers are semantically related. in signaling object or sound topic. In some cases you can use "Tocsin" instead a noun "Clappers".

Tocsin noun - An object intended to give public notice or warning.

Clappers and tocsin are semantically related. Sometimes you can replace term "Clappers" with "Tocsin", this nouns are similar.