Command sergeant major and Sergeant

Command sergeant major noun - A noncommissioned officer serving as chief administrative officer of a headquarters unit of the Army.

Sergeant and command sergeant major are semantically related. In some cases you can use "Sergeant" instead a noun phrase "Command sergeant major".

Sergeant noun - Any of several noncommissioned officer ranks in the Army or Air Force or Marines ranking above a corporal.

Command sergeant major and sergeant are semantically related. Sometimes you can replace phrase "Command sergeant major" with "Sergeant", this terms are similar.