The noun 'store' is a common noun, a general word for a retail establishment selling items to the public; a general word for a quantity or supply of something kept for use as needed; a word for any store of any kind.
A proper noun is the name of a specific person, place, or thing. Examples of proper nouns for the common noun 'store' are:
The word 'store' is both a noun and a verb.
EXAMPLES
Noun: He went to get something in the store.
Verb: It is important to store food for when bad weather is expected.
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