The term 'CODE SUBJECT' can be broken down into four crossword solutions: AREA (4 letters), DRESS (5 letters), MORSE (5 letters), and LAW (3 letters). AREA is a broad geographical region, such as a continent or country. DRESS refers to clothing, typically worn for special occasions. MORSE is a code language developed in the early 19th century by Samuel MORSE, which uses a series of dots and dashes to represent letters and numbers. Lastly, LAW is a system of rules and regulations that are enforced by a governing body.