facet facet /ˈfæsət/

noun

1. () A distinct feature or element in a problem  ( facet , aspect )
   a distinct feature or element in a problem
    He studied every facet of the question
   he studied every facet of the question
   
2. A smooth surface (as of a bone or cut gemstone)  ( facet )
   a smooth surface (as of a bone or cut gemstone)