The term "loadstone" refers to a naturally occurring magnet that attracts iron and other ferromagnetic materials. However, there are several other words and phrases that can be used as synonyms for this term. Some of these options include "magnetite," "ferromagnet," and "magnetic stone." Additionally, "lodestone" is a commonly used alternative spelling of the word "loadstone." Another similar term is "magnet," which refers to any material or object that has the ability to attract iron and other ferromagnetic materials. Overall, there are a variety of words and phrases that can be used in place of "loadstone" to convey the same concept.