In literature, the term “vitriol” is employed with a dual significance that spans both the literal and the metaphorical. Authors invoke its physical properties—as a caustic substance used in dyeing, ink-making, poisonings, and various industrial processes—to establish a gritty, tangible atmosphere in historical and scientific narratives [1][2][3]. At the same time, its venomous connotations lend it to metaphorical use, where speech, criticism, or personal attacks are described as “biting” or “burning” with the intensity of acid [4][5][6]. This multifaceted usage enriches literary language by connoting both chemical corrosion and the emotional impact of harsh words.