Moving right along this morning, here is a worksheet on the Greek word root pyr-o . It means, as you already know, fire; but it also means heat and fever. This root yields the high-frequency English word pyromaniac, which does not appear on this document. Lower frequency words in use by educated people, however abound here: you’ll find empyrean, as well as pyre, and the solid scientific adjective pyrophoric.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.