The term TYPE OF POLISH can be solved with the four letter word NAIL. NAIL polish is a lacquer that is applied to the fingernails or toenails to decorate and protect the NAIL plates. It is available in a variety of colors and shades, and can also be used to create intricate designs. NAIL polish is typically made from nitrocellulose dissolved in a solvent such as ethyl acetate or butyl acetate. It is applied with an applicator brush, and can be removed with NAIL polish remover.