Wanna learn a new word today? How about regolith? According to Merriam-Webster, regolith (a noun) is unconsolidated residual or transported material that overlies the solid rock on the earth, moon, or a planet.
I came across this word while playing the 2017 video game Prey. It’s a sci-fi game, so it makes sense to come across this word. Before looking it up, I almost thought it was made up. I was surprised that it came up in M-W.