Wouldn't 'homophone spellings be a better usage here? 'Homophones' - apart from gay chat lines, obviously - are words with the same sound (homo = same, phonos = sound) but different spellings. For example 'moat' and 'mote'; or indeed 'beanz' and 'beans'.
Homonyms are words with the same spelling but different meanings, such as the Poles who are from Poland and the poles that hold up phone wires.
I'm aware that there's a certain overlap between the two words, that's why my suggestion is 'better usage' rather than 'correct usage'.