fruit
Fruit is usually an uncountable noun. Oranges, bananas, grapes, and apples are all fruit.
You should eat plenty of fresh fruit and vegetables.
They import fruit from Australia.
You can refer to an individual orange, banana, etc as a fruit.
Each fruit contains many juicy seeds.
However, this use is not common. You usually refer to an individual orange, banana, etc as a piece of fruit.
Try to eat five pieces of fruit a day.
Don't use a plural form of fruit to refer to several oranges, bananas, etc. Instead you use fruit as an uncountable noun. For example, you say ‘I’m going to the market to buy some fruit'. Don't say ‘I’m going to the market to buy some fruits'.
There was a bowl with some fruit in it.
They gave me fruit, cake and wine.