The word 'died' is not a noun.
The word 'died' is the past tense of the verb to die.
The word die is also a noun form, a countable noun; a general word for a device for cutting or molding metal (plural form dies); and the singular form of the noun dice (plural form dice); a word for a thing.
Transport is both countable and uncountable as a noun.
The noun 'steel' is an uncountable (mass) noun, a word for a substance.
Countable
The noun 'animal' is a countable noun. The plural form is animals.
Prawn - prawns is the plural - is a countable noun
Transport is both countable and uncountable as a noun.
The noun 'steel' is an uncountable (mass) noun, a word for a substance.
Shark is a countable noun.
Countable
countable
The noun 'daytime' is an uncountable noun.
The noun 'animal' is a countable noun. The plural form is animals.
Prawn - prawns is the plural - is a countable noun
Countable
Pasta is a countable noun
The word 'violence' is an uncountable noun.
The gerund painting is a countable noun, as in "There are 12 paintings in this room."