If an orange is orange, why isn't a lime called a green or a lemon called a yellow?

A lime is called a lime because it's lime in colour and a lemon is called lemon because it's lemon in colour. Just to change the subject slightly why is a fly called a fly? - because it flies - so if a fly didn't have wings would it be called a walk. We could go on and on with this couldn't we and have a lot of fun too :)

The closer the atoms are to becoming ionic the more highly dense the negatively charged side gets.

It's called the falling actionwrong subject by the way