The noun fruit is an uncountable noun, a word for a substance. Units of fruit are expressed as some fruit, pieces of fruit, a bowl of fruit, etc.
Like many uncountable nouns for substances, the plural form, fruits, is reserved for 'types of' or 'kinds of'. Examples:
The fruits they served were melon, strawberries, and peaches.
They grow a number of fruits in their orchard.
The noun 'fruit' is an uncountable noun as a word for a food substance.
The plural form 'fruits' is used for 'types of' or 'kinds of' only.
Examples:
Apples are a type of fruit. (uncountable)
The fruits we have are apples and Pears. (countable)
The noun 'juice' is an uncountable noun; a word for a substance. Units of juice are expressed in bottles of juice, glasses of juice, cartons of juice, etc.
The plural form for juice is reserved for 'kinds of' or 'types of', for example:
We serve several juices, orange, grape, and apple.
The kids don't care for different juices, they only like apple juice.
Transport is both countable and uncountable as a noun.
countable
Uncountable
uncountable
The gerund painting is a countable noun, as in "There are 12 paintings in this room."
Transport is both countable and uncountable as a noun.
countable
Uncountable
uncountable
uncountable
The gerund painting is a countable noun, as in "There are 12 paintings in this room."
few is countable
countable
Countable
The noun 'steel' is an uncountable (mass) noun, a word for a substance.
he asked me if the word fire wood countable or uncountable?
Countable