COMMONKNOWLEDGE

Set to 2 different clues across 2 published puzzles, most often “Something everybody is aware of” — The New York Times, Tuesday, 15 February 2011.

15 letters

Every clue on record, most used first

Something everybody is aware ofonce
The New York Times — Tuesday, 15 February 2011
Town planner's expertise?once
The New York Times — Thursday, 21 December 1995