Difference between Ninth and Ordinal

Ninth

Part of speech: adjective

Definition: The ordinal form of the number nine.

Part of speech: abbreviation

Definition: The person or thing in the ninth position. One of nine equal parts of a whole.

Example sentence: If a writer knows enough about what he is writing about, he may omit things that he knows. The dignity of movement of an iceberg is due to only one ninth of it being above water.

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.