There are two types of plural noun forms, regular nouns and irregular nouns.
A regular plural is a Word that forms the plural by adding an -s or an -es to the end of the Word.
An irregular plural is a Word that forms the plural in some other way.
Examples of regular common plural nouns:
- Apple: Apples
- box: boxes
- church: churches
- dog: dogs
- egg: eggs
- glass: glasses
Examples of irregular plural common nouns:
- baby: babies (nouns ending in -y preceded by a consonant, change the -y to -ies)
- lady: ladies
- calf: calves (nouns ending in -f or -fe, but not -ff or -ffe, change the -f or -fe to -ves)
- wife: wives
- hero: heroes (some nouns ending in -o add -es, some do not)
- tomato: tomatoes
- man: men (Words from various origin languages that inherited differing plural forms)
- child: children
- foot: feet
- tooth: teeth
- mouse: mice
- crisis: crises
- parenthesis: parentheses
- fungus: fungi
- radius: radii
- antenna: antennae
- larva: larvae
- gymnasium: gymnasia
- datum: data
