0 a count noun specialized
1 a noun that has both a singular and a plural form and names something that can be counted because there can be one or more of it:
These three aspects - genres, discourses (as a countable noun), and styles - are the major lines along which the author organizes the practical analytical procedure of his framework.
The examples of pure with a countable noun occur after the indefinite article with the exception of examples (5c) and (5d).
Without this suffix, a countable noun is understood to be singular.
In this scheme, every countable noun has what might be called its inherent or expected numbers, and is unmarked for these.
That is, when specifying the amount of a countable noun, a classifier must be inserted, and the classifier has to agree with the noun.
There are many different classifiers in the language, and each countable noun generally has a particular classifier associated with it.
For those speakers, the noun bunch retains its original restriction to combine only with countable nouns despite its purely quantificational meaning.
It is now regularly used with countable nouns, especially in speech and especially by younger speakers.
