What are the pairs of lunar features?

Lunar features often refer to various geological formations found on the Moon's surface, including maria (large, dark basaltic plains), highlands (lighter, rugged areas), craters (impact sites), and rilles (channel-like structures). Commonly discussed pairs include the large maria, such as Mare Imbrium and Mare Serenitatis, and prominent craters like Tycho and Copernicus. Additionally, the contrast between the smooth, flat maria and the mountainous highlands exemplifies the Moon's diverse geological landscape. These features provide insights into the Moon's history and the processes that shaped it.