Boil down and Zero in

Boil down verb - To make into a short statement of the main points (as of a report).

Zero in and boil down are semantically related. In some cases you can use "Zero in" instead a verb "Boil down".

Zero in verb - Direct onto a point or target, especially by automatic navigational aids.

Boil down and zero in are semantically related. Sometimes you can use "Boil down" instead a verb "Zero in".