Finally this morning, here is a worksheet on the Greek roots pneum, pneumon-o, -pnea and -pnoea. They mean, variously, breathing, lung, air, and spirit (leave it to the Greeks to blend the literal and metaphorical with ease).
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.