Um actually... Opera and Edge weren't always based on chromium!
Chrome was not always based on chromeium. Chrome was based on Apple WebKit until 2013 when they forked WebKit and made the Blink engine.
Chromium has always existed. Originally it was wrapping web kit and later they forked web kit into blink and diverged from Web kit. Chromium is a level above the engine.
Um actually... Opera and Edge weren't always based on chromium!
Chrome was not always based on chromeium. Chrome was based on Apple WebKit until 2013 when they forked WebKit and made the Blink engine.
Chromium has always existed. Originally it was wrapping web kit and later they forked web kit into blink and diverged from Web kit. Chromium is a level above the engine.