Vietnam's official language, is a tonal language that can be compared to Cambodia's official language, Khmer. With each syllable, there are six different tones that can be used, which change the definition and it often makes it difficult for foreigners to pick up the language.
There are other languages spoken as well such as Chinese, Khmer, Cham and other languages spoken by tribes inhabiting the mountainous regions. Although there are some similarities to Southeast Asian languages, such as Chinese, Vietnamese is thought to be a separate language group, although a member of the Austro-Asiatic language family.