palate / palette / pallet are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
palate: (noun) the upper surface of the mouth that separates the oral and nasal cavities.
palette: (noun) the range of colour characteristic of a particular artist or painting or school of art. (noun) board that provides a flat surface on which artists mix paints and the range of colors used.
pallet: (noun) a portable platform for storing or moving goods that are stacked on it. (noun) a hand tool with a flat blade used by potters for mixing and shaping clay. (noun) a mattress filled with straw or a pad made of quilts; used as a bed.
palate: p·AE·l·ah·t
palette: p·AE·l·ah·t
pallet: p·AE·l·ah·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)