Non-ferrous is a term used to describe metals and alloys that do not contain iron in significant amounts. Synonyms for non-ferrous include non-iron, non-magnetic, non-steel, non-ferromagnetic, and non-metallurgical. Other words that can be used instead of non-ferrous are non-magnetic metals, non-steel metals, non-magnetic alloys, and non-metallurgical alloys. These metals and alloys are often used in situations where their specific properties are required, such as in electrical conductivity, resistance to corrosion, or in situations where their lack of magnetism is beneficial. It is important to note that while these metals and alloys may not contain iron, they may contain other elements and compounds that provide their unique characteristics and properties.