The term "minor metal" refers to metals that are not commonly traded on major commodity exchanges like gold or silver. These metals are often used in various industrial applications and can have significant value, despite their classification as "minor". There are a variety of synonyms that can be used to describe these types of metals, including "specialty metals", "rare metals", and "exotic metals". Other terms that may be used include "strategic metals" or "critical metals" which can highlight their importance in particular industries or for national security. Overall, the use of synonyms can help provide clarity and context when discussing minor metals, making it easier to understand their significance and potential value.