What is the correct spelling for NACHI?

If someone misspelled "nachi", it could be due to confusion with "natch" or "notch". To offer the correct alternatives, it is essential to clarify the intended meaning. If referring to the Japanese cultural term "nachi", it should be spelled as "n a c h i". However, if describing a natural formation, "natch" suggests a smooth surface, while "notch" implies a indentation or cut.