Cider apple
Cider is made in several countries and can be made from any apples. Historically the flavours preferred and varieties used to produce cider have varied by region. Many of the most traditional apple varieties used for ciders come from or are derived from those from Devon, Somerset and Herefordshire in England, Normandy in France, and Asturias in Spain, and these areas are considered to have their own broad cider styles although the many exceptions make this more of a historic footnote. Normandy cider is usually naturally carbonated and clear: Asturian cider apple varieties are mainly 'sharps' or mild 'bittersweets', producing a mildly acidic cider which is customarily served by being poured from height into the glass to oxygenate it.
Apple cider
While some states specify a difference between apple juice and cider, the distinction is not well established across the U.S. Massachusetts makes an attempt to at least differentiate "fresh" cider and processed apple juice: according to its Department of Agricultural Resources, "apple juice and apple cider are both fruit beverages made from apples, but there is a difference between the two. Fresh cider is raw apple juice that has not undergone a filtration process to remove coarse particles of pulp or sediment. Apple juice is juice that has been filtered to remove solids and pasteurized so that it will stay fresh longer. Vacuum sealing and additional filtering extend the shelf life of the juice." This still leaves unfiltered apple juice that is no longer raw in a gray area, presumably cider but not labeled as such. The addition of sweeteners or reconstitution from concentrate are left even grayer.