Laryngeal cancer and pharyngitis are fundamentally different. First, there is the specific nature of the lesions: laryngeal cancer is a type of malignant tumor in the pharyngeal and laryngeal areas, posing significant health risks; whereas pharyngitis is a common clinical symptom in the pharyngeal and laryngeal areas, mainly caused by inflammatory reactions, and may involve sensations of a foreign body in the throat, pain, and burning, but overall, it poses less risk to health. Additionally, the specific sites of disease onset differ. The lesions in laryngeal cancer primarily occur in the vocal cord area, with some in the supraglottic or subglottic areas, where new growths might be found, which can be identified through pathological biopsy. In contrast, pharyngitis primarily involves chronic congestion and inflammatory reactions of the mucous membranes in the pharyngeal area, with no direct new growth, which can be directly diagnosed and differentiated through pathological biopsy.