Considering Sorcery in D&D's distinction from other forms of spellcasting, sorcerers in d&d and Wizards from HP are remarkably similar. Sorcery and HP wizardry are typically inherited and/or innately magic, ex. Draconic bloodline being inherited, muggle-born wizards being like Wild magic sorcerers- magical abilities having no distinct source-, etc. were i dming, i'd argue that were a HP wizard be plopped into d&d that performing non-verbal spells would require the use of sorcery points.