There's no such word as davide, did you mean divide? The plural of divide is divides.
pixaxe is the singular version, pickaxes is the plural version.
The plural version of bat is bats.
The plural of googol is googols.
Suppers is the plural version of supper.
These.
ounce is the singular version and ounces is plural.
The plural of "aula" is "aulas."
dashes
enemies
Feet .
Mysteries
It is peninsulas