Here is a worksheet on the Greek word root tax/o. It means, simply, arrangement. So of course you’ll find this root at the base of words like taxonomy and syntax–both included on this document. However, you’ll also find on this document some scientific words, e.g. geotaxis, phyllotaxis, and thermotaxis, that are not exactly part of the vernacular.
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.