When it comes to the difference between a brother and a brother-in-law, there are several key points to keep in mind. For starters, brothers can fight and make up, but a brother-in-law should never argue.
A brother will help you out when needed, but a brother-in-law will go above and beyond to help you out.
You can tease your brothers all you want, but it’s never appropriate to tease your brother-in-law. Brothers typically protect their sisters while brothers-in-law typically protect their wives.