That has to do with emphasis, not tones, and it's common with noun-verb pairings like that. None of those turn into completely different words based on which t

That has to do with emphasis, not tones, and it's common with noun-verb pairings like that. None of those turn into completely different words based on which tone you use to pronounce it; a person would still know what you mean based on the sentence context but it would sound off.