knife
knives
boy
boys
wolf
wolves
ice cream
uncountable
apple
countable
man
men
pig
countable
person
people
box
boxes
goose
geese
salt
uncountable
window
countable
piano
pianos
woman
women
baby
babies
cake
countable
foot
feet
orange
oranges
ox
oxen
shelf
shelves
pen
countable
air
uncountable
mouse
mice
bread
uncountable
ox
oxen
elf
elves
wife
wives
tomato
tomatoes
dish
dishes
fish
fish
car
countable
class
classes
snow
uncountable
sheep
sheep
homework
uncountable
chicken
countable
pencil
pencils
cheese
uncountable
bus
buses
rice
uncountable
toy
toys
notebook
countable
salad
uncountable
bear
countable
frog
frogs
tooth
teeth
flower
countable
butter
uncountable
child
children
coffee
uncountable