Base metal and Precious metal

Base metal noun - A metal that is common and not considered precious.

Precious metal and base metal are semantically related in group of chemical elements topic. In some cases you can use "Precious metal" instead a noun phrase "Base metal".

Precious metal noun - Any of the less common and valuable metals often used to make coins or jewelry.

Base metal and precious metal are semantically related in group of chemical elements topic. You can use "Base metal" instead a noun phrase "Precious metal".