Coherent, ultimately from the Latin co- ("together") and haerēre ("to stick or cling")
Catercorner: Cater derives from the Middle French noun quatre (or catre), which means "four." English speakers adopted the word to refer to the four-dotted side of a die—a side important in several winning combinations in dice games. Perhaps because the four spots on a die can suggest an X, cater eventually came to be used dialectically with the meaning "diagonal" or "diagonally." This cater was combined with corner to form catercorner.