acid vs nitrous acid

Other hyponyms of acid include alcapton, alkapton, homogentisic acid, arsenic acid, cerotic acid, hexacosanoic acid, chloric acid, chlorous acid, monobasic acid, dibasic acid, tribasic acid, tetrabasic acid, fulminic acid, gamma acid, hydriodic acid, hydrocyanic acid, prussic acid, hydroxy acid, hyponitrous acid, lysergic acid, manganic acid, 2-methylpropenoic acid, methacrylic acid, selenic acid, sulfonic acid, sulphonic acid, titanic acid, perchloric acid, carboxylic acid, aminobenzoic acid, aqua fortis, nitric acid, aqua regia, nitrohydrochloric acid, barbituric acid, malonylurea, lansoprazole, Prevacid, boracic acid, boric acid, boric acid, orthoboric acid, bromic acid, carbamic acid, carbolic acid, hydroxybenzene, oxybenzene, phenol, phenylic acid, carbonic acid, chromic acid, citric acid, cyanamid, cyanamide, cyanic acid, cyanuric acid, ferricyanic acid, ferrocyanic acid, fluoroboric acid, fluosilicic acid, hydrofluosilicic acid, formic acid, fumaric acid, gallic acid, glyceric acid, glycolic acid, glycollic acid, hydroxyacetic acid, hydrobromic acid, chlorohydric acid, hydrochloric acid, muriatic acid, hydrogen chloride, hydrofluoric acid, hydroiodic acid, hypochlorous acid, iodic acid, isocyanic acid, itaconic acid, maleic acid, oxalacetic acid, oxaloacetic acid, ethanedioic acid, oxalic acid, oxyacid, oxygen acid, pantothen, pantothenic acid, PABA, para aminobenzoic acid, pectic acid, permanganic acid, phthalic acid, picric acid, pyruvic acid, dichromic acid, silicic acid, sulfanilic acid, sulphanilic acid, thiocyanic acid, toluic acid, triphosphoric acid, undecylenic acid, uric acid, oil of vitriol, sulfuric acid, sulphuric acid, vitriol, xanthic acid.