A bow is a type of knot generally featuring two loops and two loose ends. Bows will be seen on clothing (many serafuku have them), in hair, on panties and other lingerie, on shoes (shoelaces are usually tied in a bow), and pretty much any place that there is something that might be tied.
Bows are often made of ribbons, but the same object shouldn't be tagged as both. If the bow's tail is far longer than its width, tag it as ribbon instead.
If a bow is tied at the neck in place of a necktie it should also be noted as a bowtie.
