Это слова из разных языков. Семанг «курчавый» по-тайски
The etymology of the word Semang has been a matter of debate. While early researchers like Skeat and Blagden noted it had "never been satisfactorily explained," the ethnographer Paul Schebesta speculated that it originated from the Lanoh word sema', meaning "human". According to this theory, the word was misheard by Perak Malays, who changed the final glottal stop to the velar nasal [ŋ], resulting in "Semang".[13]
In Thailand, the terms Semang and Orang Asli are replaced by the terms Sakai or Ngopa (Ngò 'Pa or Ngoh Paa, which literally means 'curly/frizzy (haired) people')