In officer ranks, "So" (小) equals small; "Jung" (中) equals medium; "Dae" (大) equals large. "Jun" (准) equals equivalent, used for Warrant Officer and 1 star general to ensure that they are regarded as officer/general, although these ranks are lower than the same grade with "So" rank. "Won" (元) equals principal, only used for Won-Su, General of the Army. Each of these is coupled with one of the following: "wi" (尉) equals company grade, "ryung" (領) equals field grade, and "jang" (將) equals general.