The uses countable and uncountables nouns

1. Uncountable Nouns

1.1. Are those nouns that cannot be counted

1.1.1. a gram of salt

1.1.2. a piece of wood

1.1.3. two cups of tea

1.2. Uncountable nouns do not have a plural form

1.2.1. rices > rice

1.2.2. milks > milk

1.3. We cannot use “a” or “an” with uncountable nouns

1.3.1. a milk > a glass of milk

1.4. Numbers cannot be used in front of uncountable nouns

1.4.1. two rices > two cups of rice

2. Countable Nouns

2.1. Are those nouns that can be counted

2.1.1. One Pencil

2.1.2. Two cats

2.1.3. Three houses

2.2. Have a plural form (regular or irregular)

2.2.1. egg > eggs

2.2.2. bicycles > bicycles

2.2.3. dress > dresses

2.3. You can use "a" or "an" with countable nouns in singular

2.3.1. an apple

2.3.2. an house

2.4. Numbers can be used in front of countable nouns

2.4.1. three apples

2.4.2. five houses