I was agreeing with you. You wrote yourself that modern usage is synonymous, so I thought it would be interesting to look at the etymology too. For the record

I was agreeing with you. You wrote yourself that modern usage is synonymous, so I thought it would be interesting to look at the etymology too. For the record the full OED favours the latter root for bravery (bravo < Old Italian braido, brado (wild, savage)). Strange they don't say the same thing.