A bridge piercing is a body piercing through the bridge of the nose. Basically, it is located between the eyes. This is a very painless piercing, normally described as "a slight pressure", but less painful than piercing of the ear lobe. The head being such a vascular area, during the piercing a good deal of bleeding may occur. This piercing is also called the "earl" after the man who popularized it. It is mostly found on "collectors" as it is an obvious and therefore "uncommon" piercing. Of very high importance with this piercing is cleanliness: your nasal passages pass below it, so it is of utmost importance that you avoid infection to this area. 14 gauge (1.6 mm) is the most common gauge for this particular piercing.
A nasal septum piercing is less common than nostril piercings. The nasal septum is the cartilagenous dividing wall between the nostrils. Generally, the cartilage itself is not pierced, but rather the small gap between the cartilage and the bottom of the nose, typically at a gauge no smaller than 14ga (1.6mm). The nose has many nerves running through it and as a result, nose piercings can be painful, although it varies by individual. Septum piercing was popular among certain Native American peoples in history; the Shawnee leaders Tecumseh and Tenskwatawa, for example, had such piercings. Septum piercing is sometimes performed on bulls as part of the process to break them for the farm. This process uses a hinged brass ring with sharpened ends to facilitate insertion. Afterwards, the open ends are held together by means of a screw.