Common noun: "Pageant" as a common noun refers to a public entertainment, typically with a historical or legendary theme, involving processions, music, and dancing.
* Example: The children put on a pageant for their parents.
Proper noun: "Pageant" can also be a proper noun when it refers to a specific event with a name.
* Example: The Miss America Pageant is held annually.
Therefore, the word "pageant" is not always a common noun, but rather its classification depends on its usage in a sentence.