◆ Count/mass
There are eight different classes of nouns in English in view of: (a) their potential for combining with the following types of determiners: the zero determiner; unit determiners such as a(n), one; fuzzy quantifiers such as several, about fifty; the determiner all in the sense of ‘completely’; and (b) their potentiality for being marked as plural, either inflectionally or in terms of agreement features. There are six classes of nouns exemplified by equipment (fully mass), knowledge (almost mass, but occurs with a, e.g., a good knowledge of Latin), clothes (occurs with fuzzy quantifiers such as many, few, hence is more count-like), cattle (occurs with fuzzy quantifiers and large round numbers, e.g. a thousand [head of] cattle), people (collective nouns which have plural forms, e.g., peoples, but are not fully countable, as they do not occur in a singular form), and dog (fully count).