Countable nouns
Some nouns refer to things which, in English, are treated as separate items which can be counted. These are called countable nouns. Here are some examples:
a car, three cars
my cousin, my two cousins
a book, a box full of books
a city, several big cities
Singular and plural
Countable nouns can be singular or plural. They can be used with a/an and with numbers and many other determiners (e.g. these, a few):
She’s got two sisters and a younger brother.
Most people buy things like cameras and MP3-players online these days.
These shoes look old now.
I’ll take a few magazines with me for the flight.
Uncountable nouns
In English grammar, some things are seen as a whole or mass. These are called uncountable nouns, because they cannot be separated or counted.
Some examples of uncountable nouns are:
Ideas and experiences: advice, information, progress, news, luck, fun, work
Materials and substances: water, rice, cement, gold, milk
Weather words: weather, thunder, lightning, rain, snow
Names for groups or collections of things: furniture, equipment, rubbish, luggage
Other common uncountable nouns include: accommodation, baggage, homework, knowledge, money, permission, research, traffic, travel.These nouns are not used with a/an or numbers and are not used in the plural.
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