Plural of nouns

Examples:

cat – cats

house – houses

Examples:

bus – buses

marsh – marshes

lunch – lunches

tax – taxes

Examples:

wife – wives

wolf – wolves

Exceptions:

roof – roofs

belief – beliefs

chef – chefs

chief – chiefs

Examples:

city – cities

puppy – puppies

baby - babies

Examples:

ray – rays

boy – boys

toy - toys

Examples:

potato – potatoes

tomato – tomatoes

Exceptions:

photo – photos

piano – pianos

halo – halos

 If the singular noun ends in ‑us, the plural ending is frequently -i

cactus – cacti

focus – foci

If the singular noun ends in ‑is, the plural ending is ‑es.

analysis – analyses

ellipsis – ellipses

 If the singular noun ends in ‑on, the plural ending is ‑a.

phenomenon – phenomena

criterion – criteria

Examples:

sheep – sheep

series – series

species – species

deer –deer

Examples:

child – children

goose – geese

man – men

woman – women

tooth – teeth

foot – feet

mouse – mice