(uncountable) The act of hanging a person (or oneself) by the neck in order to execute that person (or to commit suicide).Hanging is the punishment for one convicted of war crimes, there.
(countable) A public event at which a person is hanged.The hanging of the bandits was attended by the whole village.
(countable) Anything wide, high and rather thin that is hung as a decorative element (such as curtains, gobelins, wallpaper or posters).The various hangings on that Christmas tree look nice.
(uncountable) The way in which hangings (decorations) are arranged.I dislike the cramped hanging in the gallery of 18th century painters.