Many words in English, French, and Italian are derived from Latin words; so it is useful to learn Latin as well when learning these languages.
The lesson a reader derives from a book differs from person to person.
Some English words have counterintuitive pronunciation– looking up the etymology can help!
Your attention to detail is great as an editor, but too much emphasis and etymologies when referring to dictionaries is a bit unnecessary.
We should winnow it down to a few key options.
For the wedding, we winnowed down the list from fifty to just five couples.