This grammar point explains some difficulties with uncountable nouns.
There are some difficulties associated with uncountable nouns. Sometimes it is difficult to know if a noun is uncountable or not.
Some nouns can be both countable and uncountable. Often the meaning is different when a word is used as a countable noun and when it is used as an uncountable noun.
Look at the table below:
| Uncountable Example | Countable Example | |
| Glass | Windows are made of glass. | Could I have a glass of water, please. |
| Hair | Her hair is beautiful. | I found a hair in my soup. |
| Paper | We should recycle paper. | I'd like a paper, please. |
At times, two nouns may seem very similar, but one is uncountable and one is countable. We may intuitively assume that a noun is uncountable, only to find out that it is countable.
Look at the table below:
| Fruit | Uncountable |
| Vegetable | Countable |
| Broccoli | Uncountable |
| Cucumber | Countable |
If you are unsure, it is best to look up the word in a dictionary. Remember that "Count Noun" means "Countable Noun" and "Mass Noun" means "Uncountable Noun".
Find online dictionary tips here | Learn more about countable nouns.