The Cambridge Grammar of the English Language (Page 335) says:
A count noun denotes a class of individuated entities of the same kind. Boy, for example, denotes the class of boys. The individual entities are atomic in the sense that they cannot be divided into smaller parts of the same kind as the whole. A boy consists of parts -- head, arms, legs, etc. -- but these parts are not themselves boys.
So the singular count noun boy denotes a class of individuated entities of the same kind (e.g., the class of boys).
Now, does the plural count noun boys denote a class of individuated entities of the same kind (e.g., the class of boys) as well?
Or does it denote individuated entities of the same kind?
If a plural count noun such as boys doesn't denote a class of boys, does it mean that CGEL's statement about a count noun denoting "a class of individuated entities of the same kind" is applicable to singular count nouns but not to plural count nouns?