one fish - four ...
fish
one tooth - two ...
teeth
one goose - three ...
geese
one sheep - two ...
sheep
one man - three ...
men
one woman - three ...
women
one mouse - two ...
mice
one ox - three ...
oxen
one foot - two ...
feet
one child - three ...
children
one octopus
octopi
one deer - three ....
deer
one person - many ....
people
one cactus - many ...
cacti