-usually has a fully functioning front fly
-has two back seams "framing" the ass.
-generally legs are a longer than trunks (hits mid-thighish)
-Elastic waistband and legbands
-usually has no fly
-usually no seam in back or one seam down the middle
-often they are "seamless"
-legs tend to be shorter than trunks (hitting just low enough to cover)
-often has elastic waistband
-usually does not have elastic legbands
Hope that clarifies the difference. It is very confusing. So let's not even talk about hipsters, or low-rise trunks, or any other similar terms that are also tossed around.
And don't even get me started on the punctuation of boxerbrief (boxerbrief, boxer brief, boxer-brief). I just tend to switch it up the punctuation because the idea is always clear.
Look at the photos for further clarification.
Poll of the day: What are your thoughts on this? Do you go by a different definition? What is that? Is my definition incorrect?