+S or +ES?
rat
rats
baby
babies
elf
elves
toy
toys
man
men
fox
foxes
cherry
cherries
leaves
movie
movies
tooth
teeth
dream
dreams
city
cities
shelf
shelves
party
mouse
mice
class
classes
candy
candies
knife
knives
fish
fish
goose
geese
nest
nests
country
countries
loaf
loaves
hoof
hooves
person
people