Pungency compounds refer to a broad class of naturally occurring molecules in spices and pungent foods that activate sensory receptors, primarily TRPV1 and TRPA1, producing sensations of heat, burning, or tingling. Common examples include capsaicinoids from Capsicum species, piperine from Piper nigrum, gingerols and shogaols from Zingiber officinale, and allyl isothiocyanate from Brassica and Allium species. These compounds exhibit diverse chemical classes such as vanillyl amides, alkaloids, phenols, and organosulfur molecules. Their pungency intensity varies and is quantified using Scoville heat units or similar sensory metrics. They are lipophilic, often requiring fat or alcohol for extraction, and contribute to flavor, antimicrobial activity, and physiological effects like increased metabolism or pain relief in topical applications.