What are the differences between flex-basis and width?

Question

There have been questions and articles about this, but nothing conclusive as far as I can tell. The best summary I could find is

flex-basis a

Answer 1

It makes a difference if you're wrapping.

Say, you set a child to width:0 and expect it to wrap, well that's not going to happen. But with flex-basis:0 it will wrap. (provided overflow isn't hidden)