Double salt and Solid solution

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

Solid solution and double salt are semantically related. In some cases you can use "Solid solution" instead a noun phrase "Double salt".

Solid solution noun - A homogeneous solid that can exist over a range of component chemicals; a constituent of alloys that is formed when atoms of an element are incorporated into the crystals of a metal.

Double salt and solid solution are semantically related. Sometimes you can replace phrase "Double salt" with "Solid solution", this phrases are similar.