A monk shoe is a style of shoe with no lacing, closed by a buckle and strap. It is moderately formal shoe: less formal than a full Oxford (American: Balmoral); but more so than an open Derby (American: Blücher). In between these, it is one of the main categories of men's shoes. If it has a cap toe, it is usually brogued, and is popular in suede.
A Derby or Gibson shoe (Blücher in America) is a style of leather shoe with open lacing. The tongue of the shoe is made with the same piece of leather as the vamp, and the facings with the lacing holes meet together over the tongue, and are not stitched to the tongue at the bottom. It is sometimes incorrectly called a style of Oxford shoe, which refers exclusively to shoes with closed lacing.
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