Difference between Thirty-first and Ordinal

What is the difference between Thirty-first and Ordinal?

Thirty-first as a numeral is the ordinal form of the number thirty-one, describing a person or thing in position number 31 of a sequence. while Ordinal as an adjective is of a number, indicating position in a sequence.

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