I think this whole series needs an upgrade! Apart from the old links and outdated resources, there aren’t enough examples and I don’t really explain some things very well. This was written almost eight years ago, but here’s what I think I meant (or it is what I mean now, at least): Some things appear different, but are actually the same. 心 and 忄 are the same, but look different. What you asked about is the opposite, so things that look similar, but are actually different. On the component level, there are many examples: 灬 is sometimes fire, sometimes not. In simplified Chinese, 又 is a wildcard stand-in for almost anything (see here).

Hi! Thank you so much for pointing out the problem with the Horizontal Hanzi link, I have now deleted it entirely! As for dates, all my articles are have a publication date, it’s right there at the bottom of the post. 🙂 Regarding Patreon, I’m not doing much there actively these days and have decided to provide most things for free (such as the podcast), but support is of course welcome! I might also do more with Patreon later if/when I have more time to spend on Hacking Chinese.