corazón
/koɾaˈθon/ · A1 · noun · m
heart
❤️ cor (Latin heart) + -azón: same root as cardiac, core, courage
From Latin cor, heart, with an old augmentative ending, so literally big heart. English keeps the same root in cordial, courage and core, which matches all three senses: the organ, the feelings, and the center of something.