仁 is a key concept in Confucian philosophy, often translated as 'benevolence' or 'humaneness', referring to the virtue of compassion and kindness toward others. It also has a concrete meaning: the kernel or edible part inside a nut or fruit seed (e.g., 杏仁 'almond kernel', 花生仁 'peanut kernel'). In compounds like 同仁, it can mean 'colleague' (person with shared virtue).