Lacus Bonitatis (Moon)

"Lake of Goodness"

Lacus Bonitatis is a small lunar mare that lies to the northwest of the prominent crater Macrobius. This mare is an irregular region of basaltic lava with uneven borders. The mare lies within a diameter of 92 km and the longest dimension trends from the southwest to the northeast. (wikipedia entry)

A lacus is a "lake" or small plain. On the Moon they are named after latin terms describing weather and other abstract concepts.