Sure, but they’re often different enough to to be obvious in context, or similar enough to have a shared etymology.
Tones came later in Chinese, so when you have 2 homophones with similar meaning and different tones, they’re usually from words that had 2 suffixes, which were later dropped, but the tone of first part remained, 买 and 卖 didn’t end up with the same word by coincidence.
Sure, but they’re often different enough to to be obvious in context, or similar enough to have a shared etymology.
Tones came later in Chinese, so when you have 2 homophones with similar meaning and different tones, they’re usually from words that had 2 suffixes, which were later dropped, but the tone of first part remained, 买 and 卖 didn’t end up with the same word by coincidence.