Per HP Wiki
391.133Bombarda is the incantation of a charm used to provoke small explosions; one use for this explosion is to blast open sealed doors or to blow bars off of windows. The incantation Bombarda Maxima is a stronger, more powerful variation of this spell.
Medan
The Reductor Curse (Reducto) is a curse that can be used to blast solid objects into pieces. It is rather easy to reduce a target to a fine mist or a pile of ashes.
Detbeskrivssomsådantförstagångendetnämns.
“He had soon mastered the Impediment Jinx, a spell to slow down and obstruct attackers, the Reductor curse, which would enable him to blast solid objects out of his way, and the Four-Point Spell, a useful discovery of Hermione’s which would make his wand point due north, therefore enabling him to check whether he was going in the right direction within the maze.”
Harry Potter and the Goblet of Fire, Chapter 31 (The Third Task)
Såvikansenågraskillnader.Manskaparenmålinriktadexplosionmedandenandrareducerarmålettillbitar.Enärencharm,denandraärenförbannelse.Manhittadesiböckerna,denandrafinnsheltifilmerna.
Mingutinstinktärattdenallmännapublikenskulleförväntasigreducto"för att göra saker små, medan" bombarda "låter som bombard , ett ord som är relaterat till explosioner.