My wife gave me a very nice pair of brown Oxfords for my birthday, but I am still looking for a pair of brown brogues.
OK, I'm going to ask a real dumb question. And keep in mind this is coming from a country boy who doesn't have much experience in nice, classy men's attire.

What is the difference between brogues like he just bought and Oxfords?

I have a pair of Wingtip Oxfords like this:



I intend to wear them with my kilt. First, are these appropriate? Second, what makes them Oxfords and the ones in the original post brogues? I see some minor differences between them, of course, but when does one cease to be an Oxford and become a brogue and vice-versa?

In other words, if I saw a pair of shoes in the store, how would I differentiate between an Oxford and a brogue?