There is a difference. And if you’re a big or tall sized man, the whole process can be very confusing.
You may be a big size, but not a tall size, or visa versa. In other words, just because you need a tall size doesn’t mean you need a big size. And to make matters even more confusing, most stores that sell men’s clothing don’t even know the difference! It's more than just finding the sizes. The key is to find a men's clothing expert who has the knowledge you need to get a proper, comfortable fit.