The term 'SODA BUY' can be broken down into four crossword solutions: BOTTLE (6 letters), CASE (4 letters), LITER (5 letters), and ONELITER (8 letters). BOTTLE refers to a container made of glass, plastic, or metal, typically used for storing liquids such as soda. A CASE is a large quantity of bottles, usually 12 or 24, that are sold together. A LITER is a unit of volume equal to 1, 000 cubic centimeters, or about 33.8 fluid ounces. ONELITER is a single liter of liquid, which is equivalent to 33.8 fluid ounces.