Double salt and Paris green

Double salt noun - A solution of two simple salts that forms a single substance on crystallization.

Paris green and double salt are semantically related. In some cases you can replace phrase "Paris green" with "Double salt", this phrases are similar.

Paris green noun - A toxic double salt of copper arsenate and copper acetate.

Double salt and Paris green are semantically related. You can use "Double salt" instead a noun phrase "Paris green".