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.
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."
countable
few is 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?
Pasta is a countable noun