[n] the expression on a person's face; "a sad expression"; "a look of triumph"; "an angry face"
[n] a characteristic to be considered
[n] a distinct feature or element in a problem; "he studied every facet of the question"
[n] the visual percept of a region; "the most desirable feature of the park are the beautiful views"
[n] the beginning or duration or completion or repetition of the action of a verb