Difference between Twenty-first and Ordinal

What is the difference between Twenty-first and Ordinal?

Twenty-first as an adjective is the ordinal form of the number twenty-one. while Ordinal as an adjective is of a number, indicating position in a sequence.

Twenty-first

Part of speech: adjective

Definition: The ordinal form of the number twenty-one.

Part of speech: abbreviation

Definition: The person or thing in the twenty-first position. One of twenty-one equal parts of a whole, usually written \textstyle\frac{1}{21}. The twenty-first birthday.

Ordinal

Part of speech: adjective

Definition: Of a number, indicating position in a sequence.

Part of speech: noun

Definition: An ordinal number such as first, second and third.

We hope you now know whether to use Twenty-first or Ordinal in your sentence.

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