What are the other examples of irregular nouns?

You're asking for examples of irregular nouns. But, it's important to understand that "irregular noun" is not a proper grammatical term. There's no grammatical category for "irregular nouns".

However, you're likely asking about nouns that have irregular plural forms. These are nouns that don't simply add "-s" or "-es" to form their plural.

Here are some examples of nouns with irregular plural forms:

Common Irregular Plurals:

* Child - Children

* Man - Men

* Woman - Women

* Foot - Feet

* Tooth - Teeth

* Goose - Geese

* Mouse - Mice

* Ox - Oxen

* Sheep - Sheep (same form for singular and plural)

* Fish - Fish (sometimes "fishes" for multiple kinds of fish)

* Person - People

* Datum - Data

* Medium - Media

* Crisis - Crises

* Analysis - Analyses

* Syllabus - Syllabi

Less Common Irregular Plurals:

* Brother - Brethren (formal, archaic)

* Die - Dice

* Octopus - Octopi or Octopuses

* Cactus - Cacti or Cactuses

* Fungus - Fungi or Funguses

* Formula - Formulae or Formulas

* Radius - Radii or Radiuses

Note: Some words have both regular and irregular plural forms, like "octopus".

If you have any specific nouns in mind, feel free to ask! I can tell you their plural forms.