Here is a worksheet on the Greek roots ology and logy. They mean both study of and science. You needn’t think much about these two roots to realize just how productive they are in English. People studying for careers in the health professions would do well to master these roots’ meanings.
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.