Kamacite is a nickel-iron alloy that is found in meteorites. It is commonly used in the study of meteorites and it is often associated with the iron-nickel alloy called taenite. There are several synonyms for kamacite including fer-nickel, pig iron, meteoric iron, and nickel-iron alloy. These synonyms are used interchangeably in the scientific literature and are often used to describe the same material. The use of these synonyms reflects the diverse fields of study in which kamacite is used, including geology, mineralogy, and metallurgy, among others. Regardless of the terminology used, kamacite remains an important material in the study of meteorites and the origins of our solar system.