In which celestial body does the term "lunar" refer to?

The term "lunar" is derived from the Latin word "lunaris," which directly translates to "of the moon." In astronomical contexts, "lunar" specifically relates to the moon, its features, phenomena, and studies. This includes anything involving the moon's surface, its phases, and its influence on Earth, such as tides. For instance, the term "lunar eclipse" describes an event when the Earth comes between the sun and the moon, casting a shadow on the moon. Understanding that "lunar" is connected exclusively to the moon helps clarify its use in various scientific discussions. As such, when positing which celestial body the term refers to, the moon is the only correct answer.