I had no idea that “galaxy” ultimately derived from the Greek word for milk!

Not following on the planet one though. Almost every word for the planet we’re on in as many languages as I can think of has the name for Earth being roughly synonymous with the substance upon which we walk.
Doing some digging I found some references to it being like the word for “under the stars”, “the place where humans are”, “everything surrounded by water”, “where you can hear the thunder”, “deep”, “round”, “life” and my favorite: “turtle”.