Muscovado is a moist, fine sticky-textured sugar. It has the flavor depth of molasses w/out the pungency. Light muscovado is excellent in baked goods, toffee sauces, and for making tomato relishes & chutneys; whereas the more intense flavour of the dark version is ideal for fruitcakes, marinades, and chili sauces.
Palm Sugar: Made from the sap of various palm trees; it is available in both dark & light styles -- the former being stronger flavoured. Palm sugar is most commonly sold shaped into cylinders, round cake-like pieces, or as in thick liquid form in jars, sometimes labelled "palm honey." The former type needs to be shaved or grated before use, while the latter is mostly used as a spread on sweet breads and in confectionery. Thai palm sugar is the most highly prized.
"A house is beautiful, not because of its walls, but because of its cakes." ~ Old Russian proverb