Occasionally when right clicking on a misspelled word to correct it, I bump the track pad and accidentally add the misspelled word to my dictionary. Business is one of those words I apparently did that with. I have never been able to figure out how to remove words from my dictionary, but honestly never looked that hard, for some ridiculous reason I think people will focus on what was said instead of looking for nits to pick despite all the evidence suggesting otherwise.
I considered it may be a dictionary correction issue but i am sort've railing against the suggestion of current level LLMs being used for tax-software and POS design.
Edit: And if I was using C or C++ above my lack of capitalization would either evoke an error too OR passably continue foward referencing the wrong variable and result in a similar error to your transposition.