Misnomers

An inchworm is neither an inch long, nor a worm.
Greenland is mostly arctic and Iceland is mostly tundra.
Panama hats are not made in Panama, but Ecuador.
The “lead” in pencils is made of graphite and clay, not lead.
Northwestern University is in northeastern Illinois, a mid-western state.
“Tin foil” is almost always actually aluminum.
Catgut is made from sheep intestines.
The Hundred Years’ War did not last for 100 years but 116.
Head cheese is actually a meat product.
“Horny toads” or “horned frogs” are actually lizards.
Though a starfish is star-shaped, as the name suggests, it is not a fish.
The titmouse is a bird, not a mouse.
Jellyfish are not fish.
The Washington Redskins play in Landover, Maryland.
The New York Jets and New York Giants play in East Rutherford, New Jersey.
Scotland Yard is located in England.
The “funny bone” is not a bone — the phrase instead refers to the ulnar nerve.
During its peak, rush hour often lasts more than an hour, with very little, if any, movement.
A parkway is intended for driving.
A driveway is intended for parking.
Antisemitism is prejudice against Jews, not all Semites.
Arabic numerals originated in India, not in the Arab world.
Chinese checkers is not Chinese (or even Asian) in origin.
Dry cleaning often uses fluid such as naphtha, making clothes wet.
Koala bears are herbivorous marsupials, unrelated to the carnivorous bear family.
Newfoundland is not a newly found land. It was discovered over 5000 years ago.
Peanuts are legumes, not nuts.
The TV show Aqua Teen Hunger Force does not relate to any of the elements of its name.
Danish pastries (invented in Austria).