Nothing.
Cambodians are people from the country Cambodia. Cambodia, officially known as the Kingdom of Cambodia and once known as the Khmer Empire, is a country located in the southern portion of the Indochina Peninsula in Southeast Asia. The dominant ethnicity in Cambodia is the Khmers.
People from Cambodia are called Cambodians. It's not rocket science, honey. Just like people from England are called English and people from Japan are called Japanese. Keep it simple, sweetheart.
Cambodia is now officially called "The Kingdom Of Cambodia"
they call them iraqi's
You call people living in Australia, Australians.
United People of Cambodia was created in 2003-08.
Burmese.
Montserratians
Portuguese.
Brazilians
Welsh