The reason for choosing this topic is related to the frequent occurrence of nouns in almost each language structure and to the fact that the usage of this part of speech involves other grammatical issues. In this respect, dealing with countability/uncountability does not mean only the classification of nouns into two categories. It also involves modalities of making up the plural in English, the usage of determiners, defective forms of some nouns, the concord of subject with the predicate.