Singular Countable nouns
Incorrect : I have no money to buy car.
Correct : I have no money to buy a car.
Incorrect : He bought umbrella yesterday.
Correct : He bought an umbrella yesterday.
Note: A singular countable noun cannot be used without a determiner before it. A., an, the, this, that, each, every and no are some of the determiners that can be used before a singular countable noun.
