Rules for pluralizing nouns include adding 's' to words ending in consonant-vowel-consonant, adding 'es' to words ending in 'ch', 'o', 's', 'sh', or 'x', and adding 'ies' to words ending in a consonant + 'y'. Some irregular plurals are 'children', 'people', 'teeth', 'feet', 'men', and 'women'. Nouns ending in 'fe' or 'f' form plurals by adding 'ves' such as 'leaf' becoming 'leaves' and 'knife' becoming 'knives'.

2.  Plural of nouns spelling rules
Add s
boy boys
girl girls
Add ES to
Ch bench benches
O tomato tomatoes
S bus buses
Sh bush bushes
X box boxes

3.  Add IES y after consonant
i consonant
baby babies
lady ladies
Irregular plurals
child children
person people
tooth teeth
foot feet
man men
woman women

4.  End in FE and F add VES
Leaf leaves
Knife knives