countables and uncountable nouns

Countable

If a noun is countable :
a. we can use a/an in front of it : I bought a book ;
b. it has a plural and can be used in questions with How many : How many books did you buy? ;
c. We can use a number in front of it: one book, two books.

Uncountable


If a noun is uncountable:
a. we don’t normally use a/an in front of it: I bought some bread ;
b. it does not normally have a plural and can be used in questions with How much : How much bread did you eat? ;
c. we can’t use a number in front of it.

Attention !
Some nouns are countable when they refer to single items, but they are uncountable when they refer to substances:
Countable ( a single item )
He ate a whole chicken ! or I had a boiled egg for breakfast.
Uncountable ( material / substance )
Would you like some chicken? or There’s egg on your tie.

Some nouns are uncountable when they refer to a material, but they are countable when they refer to an object made from that material:
Countable ( thing )
I broke a glass this morning or I picked up a stone.
Uncountable ( material )
We make glass from sand and lime or We used stone to build our walls..


Uncountable nouns in English:

 A number of nouns , like information, are countable in many languages, but they are uncountable in English. This means we can not :
- use a/an in front of them : I’d like some information, please.
- give them a plural : I’d like some information, please.

 Other examples : advice , clothing, furniture, hair, homework, luggage, meat, money, news, permission, soap, spaghetti, thunder, toast, traffic, weather,milk,cheese, coffee, water,flour,pizza...