Terpenes are a type of organic compound produced by plants.

My new fountain pen is easy to write with.

I used pliers to pull out the nail.

My new pen tablet is very easy to use.

His new novel is full of suspense, and once you start reading, you can't stop.

The trailer was shown before the main part of the movie started.

When you stand at the very top of the mountain, you can see everything.

Penryn is my best friend.

My penfriend lives in Australia.

We will use pentane in this chemistry experiment.