Countable Nouns
A countable noun (or count noun) is a noun with both a singular and a plural form, and it names anything (or anyone) that you can count. You can make a countable noun plural and attach it to a plural verb in a sentence. Countable nouns are the opposite of non-countable nouns and collective nouns.
In each of the following sentences, the highlighted words are countable nouns:
We painted the table red and the chairs blue.
Since he inherited his aunt's library, Jerome spends every weekend indexing his books.
Miriam found six silver dollars in the toe of a sock.
The oak tree lost three branches in the hurricane.
Over the course of twenty-seven years, Martha Ballad delivered just over eight hundred babies.