Actually jack-o-lanterns can be made out of any fruit or vegetable; it's just that pumpkins are large, and easy to hollow out and carve faces on.
(It is believed that the first jack-o lanterns were made from turnips)
Halloween lanterns are traditionally made from pumpkins; some people use plastic imitation pumpkins.
yes
Jack-o'-lanterns originally were hollowed out turnips or rutabaga, not pumpkins.
turnip was used
Pumpkins
It's a tradition to carve pumpkins on Halloween, when the pumpkins are carved they are called jack-o-lanterns.
Pumpkins are often used to create jack-o-lanterns on Halloween.
turnips
65% of pumpkins are used by people to make Jack-O-Laterns.
Pumpkins are used to carve jack-o-lanterns.