It’s not just the piping that has been changed, either.
It’s the way they’re made.
Olive and porter pipes, which are made from the same material, are often made in different ways, with the result that they often look slightly different from each other.
Read more about pipe making.
The most common of these is the ole, which is a round pipe made from two or more pipes, called a “lid”.
Olive lids are also popular for making decorative fittings.
Other types of pipe, such as the brazier and briar, are sometimes called “pipe lids”. Read more