A hoard is a store or accumulation of things: An important hoard of Roman coins was found in a field in Suffolk. A horde is a large group of people: There were hordes of bargain hunters at the sales.
The ‘Sun of May’ was added in 1818. The blue bands are a shade known as ‘celeste’, said to be the colour of the sky which inspired Argentine revolutionary Manuel Belgrano before battle. Effective date: 16 August 1985.