The correct spelling of the word is not NIADE, but rather NYADE (IPA: /ˈnuː.jeɪd/). This word is of Norwegian origin, referring to a water spirit similar to a mermaid, and is often used in Scandinavian folklore. The spelling of NYADE is based on the Norwegian pronunciation, which includes a "y" sound rather than an "i." It is important to double-check spelling, especially when dealing with words from other languages, as a small mistake can change the meaning of a word entirely.