Thai is a Tai-Kadai language spoken by about 65 million people mainly in Thailand (ประเทศไทย), as well as the Midway Islands, Singapore, the UAE and the USA Thai is closely related to Lao, and northern dialects of Thai are more or less mutually intelligible with Lao, particularly the Lao spoken in northern Thailand. Thai vocabulary includes many words from Pali, Sanskrit and Old Khmer.