A
bottle is a rigid
container with a neck that is narrower than the body and a mouth. By contrast, a
jar has a relatively large mouth or opening which may be as wide as the overall container. Bottles are often made of
glass,
clay,
plastic,
aluminium or other impervious materials, and typically used to store
liquids such as
water,
milk,
soft drinks,
beer,
wine,
cooking oil,
medicine,
shampoo,
ink, and
chemicals. A device applied in the
bottling line to seal the mouth of a bottle is termed an external
bottle cap,
closure, or internal
stopper. A bottle can also be sealed by a conductive "innerseal" by using
induction sealing.