Emerald and Verdigris

Emerald noun - A green transparent form of beryl; highly valued as a gemstone.

Verdigris and emerald are semantically related. in rich green topic. In some cases you can use "Verdigris" instead an adjective "Emerald".

Verdigris noun - A green patina that forms on copper or brass or bronze that has been exposed to the air or water for long periods of time.

Emerald and verdigris are semantically related. You can use "Emerald" instead an adjective "Verdigris".