The term 'CERTAIN APPLES' can be broken down into four crossword solutions: MACS (4 letters), IMACS (5 letters), ROMES (5 letters), and RUSSETS (7 letters). MACS are a type of apple that is sweet and tart, with a crisp texture. IMACS are a type of apple that is sweet and juicy, with a soft texture. ROMES are a type of apple that is tart and firm, with a dense texture. Lastly, RUSSETS are a type of apple that is sweet and nutty, with a coarse texture.