What are the 4 words for expressing priority in English, and how do official writing guides determine which one to use?

This is Wassy.As a business English coach, I often receive consultations from people who freeze up because they cannot say ...

Why do the roots 'rect' and 'reg' contain both 'king' and 'right angle'? A record of how I sorted 29 words and excluded 'register'

The 'rect' in 'rectangle' and the 'reg' in 'regular' trace back to the same single root.One is about right angles, and the ...