What’s typical is that the word uses a Latin prefix and a Greek root. This bugs come folks.
https://www.comicskingdom.com/sherman-s-lagoon for May 31, 2021
And the word isn’t even all that simple. mono is Latin, meaning “one,” but it’s derived from the Greek monos meaning “alone.”
Lithos is Greek for “stone,” by the way. The material. The thing you can hold in your hand is petros, a rock.