The term 'POP FLAVOR' can be broken down into two crossword solutions: COLA (4 letters) and ROOTBEER (8 letters). COLA is a type of carbonated soft drink that is flavored with either natural or artificial cola flavorings. It is usually dark brown in color and contains caffeine. ROOTBEER is a sweet, carbonated beverage that is flavored with the extract of the root of the sassafras tree or with a combination of artificial and natural flavors. It is usually light brown in color and does not contain caffeine.