• For the state of pronounced fear, see terror.
• For the period of the French Revolution, see its more formal name, the Reign of Terror.
• For campaigns of political terror during the Russian Revolution, see Red Terror and White Terror. A later campaign, sometimes referred to as the Great Terror, is discussed in the article Great Purge.
• For historical and popular terms referring to violence (especially against civilians, whether prominent or not) that is insignificant in terms of military tactics but aimed at undermining morale, see terrorism.
• For military doctrine, Shock and Awe.
• For the USA's "War on Terror" (2001–present), see War on Terrorism.
• Eight ships of the Royal Navy have been named HMS Terror.