Galfenol, also known as iron-gallium alloy, is a magnetic material that has unique properties including strong magnetostriction, high magnetomechanical coupling, and high saturation magnetization. This material has various applications including in actuators, sensors, and energy harvesting devices. Synonyms for galfenol include magnetostrictive iron-gallium alloy, Fe-Ga alloy, ferrogallium, Fe-Ga magnetostrictive alloy, and iron-gallium magnetostrictive alloy. These synonyms are useful when searching for information about galfenol or when discussing the material with other researchers or industry professionals. Understanding the various synonyms for this material can help to broaden one's understanding of its properties and potential applications.