"Yam" is typically considered uncountable when referring to the substance in general, as in "I like yam." However, when referring to specific types or individual yams, it can be countable, as in "I bought three yams." The context determines whether it is used in a countable or uncountable sense.
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?
Pasta is a countable noun