COUNTABLE NOUNS

• are nouns that can be counted: a man, two apples, five pens, ten hoops.

UNCOUNTABLE NOUNS

• are nouns that cannot be counted: water, oil, hair, sand, salt.

For countable nouns, we can use "a few" and "many" :
e.g : There are afew books inthe bag.
        Amelia has many toys.

For uncountable nouns, we use 'a little' and 'much' :
e.g : My mother uses a little oil to cook.
        There isn't much rice left in the pot.

However, we can use 'some' and 'a lot of ' for both countable and uncountable nouns:
e.g : My sister bought some apples from the market.
        There is a lot  of food in the canteen.