Google Chrome's identical twin sister, Chromium

Today, I saw Chromium on Google. At first, I thought it was a misspelling. Even the icon seemed to me to only differ in color. Look at the icons of these two sisters: the Google Chrome logo and the Chromium logo. They look similar, right? Specifically, which one is the younger sister, I can't say, but I feel it's the latter because it's more complete than the former. That is, it's more suitable for more systems. The reason Google developed Google Chrome, I think many people are not very familiar with. Actually, their plan through Google Chrome is:

1. To build a safer, faster, and more stable platform for all internet users.