They're part of the same language family, but pretty far apart. The Lithuanian, Latin, and Saskrit words for fire are ugnis, ignis, and agni. Are they the same

They're part of the same language family, but pretty far apart. The Lithuanian, Latin, and Saskrit words for fire are ugnis, ignis, and agni. Are they the same word? Nah. They just share an ancestor. Same thing with tapu and taboo. They are for sure related but if we're gonna talk about the Māori concept and not the English or Fijian one we can signal that so easily by calling it tapu, not taboo.