Common irregular plurals in English and their usage

Foot → Feet: This change involves altering the internal vowel sound. Example: "One foot fits in the shoe, but both feet are too large."

Child → Children: This pluralization changes both the ending and the internal structure of the word. Example: "The child was playing in the park, and soon other children joined."

Mouse → Mice: Like "foot" to "feet," this involves a vowel change and a different plural form. Example: "The mouse scurried across the floor, and soon several mice followed."

Tooth → Teeth: Another instance of a vowel change. Example: "She lost a tooth, and now she has two missing teeth."

Person → People: This plural form is entirely different from the singular. Example: "One person can make a difference, but many people can change the world."

Goose → Geese: Similar to "foot" and "tooth," this involves changing the internal vowel sound. Example: "A goose waddled by the pond, followed by a group of geese."

Man → Men: This involves a vowel change from "a" to "e." Example: "The man lifted the box, and then three men carried it away."

 Cactus → Cacti (or Cactuses): This plural can take a more Latin form ending in "i" or an English plural "es." Example: "A cactus can survive in dry climates, and many cacti are found in deserts."