In some descriptions of grammar, a mass noun is the same as an uncount noun. A noun, such as sand, oil, or honesty, that denotes a substance or concept indivisible into countable units and is preceded in English indefinite constructions by modifiers such as some or much rather than a or one
A mass noun is a noun such as `wine' which is usually uncount but is used with `a' or `an' or used in the plural when it refers to types of that substance, as in `a range of Australian wines'