Uruk is a singular, Uruk-hai is a plural form (meaning something like 'Orc-folk'), 'Uruks' is the anglicized form of Uruk-hai. JRRT used the terms interchangeably (see, for example, Letter 78). Sauron had Uruk-hai, note that in RotK, Land of the Shadow, one of Sauron's soldier orcs is sent with a tracker to look for a small dwarf-man (Frodo), an Elf-warrior (Sam) and/or rebel Uruk-hai (any of those Orcs that may have fled from Cirith Ungol).
__________________
Tar-Elenion
|