食 is used in: 食物 (food), 美食 (delicious food), 食堂 (cafeteria), 食品 (food products), 零食 (snacks). As a radical (饣), it appears in 饭, 饺, 饿, 馆, etc.
culture
民以食为天 (food is heaven for the people) reflects how central food is in Chinese culture. Food is not just sustenance — it's a social bond, a form of care, and a way of life.