Comment by ben_w

> exoplanets are by definition planets outside the solar system. It's like claiming that a brown furple isn't a furple -- the claim is wrong, regardless of what one thinks a furple is.

If only language was so logical.

While I happen to agree that exoplanets are planets, as with my point in the other comment, I aver the stronger claim ("regardless") does not follow in this context.

Stonehenge, after which the concept of a henge is named, does not meet the current archeological definition of a henge: https://en.wikipedia.org/wiki/Henge

Jerusalem artichokes are neither artichokes nor from Jerusalem: https://en.wikipedia.org/wiki/Jerusalem_artichoke

Guinea pigs are not pigs and are not from Guinea: https://en.wikipedia.org/wiki/Guinea_pig

The "mincemeat" in a mince pie is, these days, usually vegetarian: https://en.wikipedia.org/wiki/Mincemeat

Chinese checkers is German and plays nothing like checkers. Peanuts are not nuts, strawberries are not berries, hamburgers do not generally contain ham, a killer whale is actually a dolphin, etc.