It's important to distinguish between countable and uncountable nouns in English because their usage is different in regard to both the determiners and the verbs. Countable and Uncountable nouns are grammatical topics that are likely to come up again and again in your studies so it’s important to know the main differences between them. If you are looking to improve your usage of numbers and to know how to use them to refer to person(s), place(s), and things(s), which are one or more in amount, then you will need to have a good grasp of countable and uncountable nouns.

Compared to many other grammar topics, countable and uncountable nouns are among the easiest to master but they are also the easiest ones to make careless mistakes about. By not paying enough attention to these basic rules, you will put yourself at risk of not referring to them correctly in either a direct or indirect manner.

Please be sure to use the examples below to better your understanding and to also write out your own example sentences as well to get more practice. With enough effort, you’ll be able to tell the difference between the significance of one cow and five pencils. Most nouns are countable but there are a few exceptions which are not countable which you will find out more about in the rest of this article.

Countable nouns are for things we can count using numbers. They have a singular and a plural form. The singular form can use the determiner "a" or "an". If you want to ask about the quantity of a countable noun, you ask "How many _______?" combined with the plural countable noun.

Singular: One cat, one woman, one job, one store, one idea.

Plural: Two cats, three women, four jobs, five stores, six ideas.

She has three dogs. I own a house. I would like two books please. How many friends do you have?

Examples of Uncountable Nouns: tea, sugar, water, air, rice, knowledge, beauty

We cannot use a/an with these nouns. To express a quantity of an uncountable noun, use a word or expression like some, a lot of, much, a bit of, a great deal of, or else use an exact measurement like a cup of, a bag of, 1kg of, 1L of, a handful of, a pinch of, an hour of, a day of. If you want to ask about the quantity of an uncountable noun, you ask "How much?"

-There has been a lot of research into the causes of this disease.

-He gave me a great deal of advice before my interview.

-Can you give me some information about uncountable nouns?

-He did not have much sugar left.

-Measure 1 cup of water, 300g of flour, and 1 teaspoon of salt.

-How much rice do you want?

Exceptions to the Rule of Countable v. Uncountable

Some nouns are countable in other languages but uncountable in English. They must follow the rules for uncountable nouns.

The most common ones are:
accommodation, advice, baggage, behavior, bread, furniture, information, luggage, news, progress, traffic

• I would like to give you some advice.

• How much bread should I bring?

• I didn't make much progress today.

• This looks like a lot of trouble to me.

• We did an hour of work yesterday.

Be careful with the noun hair, which is normally uncountable in English, so it is not used in the plural form. However, It can be countable only when referring to certain examples such as the individual hairs on someone’s head.

Examples:

1) Did you wash your hair last night?

2) Your dad is getting some grey hairs on his beard.

As shown in the multiple amount of examples, Countable nouns can be singular or plural although they mostly are plural in usage. This is in contrast with uncountable nouns which are only singular in their nature and can never be plural. This is an important grammatical distinction which will help you to understand the main difference between these two types of nouns. Do your best to study these examples, create your own sentences, and know why countable nouns are singular and plural while uncountable nouns are only singular. Whether it's one potato or a hundred potatoes, you have to be able to count both.