heart
love, organ, cardiac, blood, beat, pump, cardiovascular, vital, pulse, affection, emotion, compassion, caring, affectionate, tender, warm, kind, gentle, romantic, passionate, devotion, fondness, infatuation, desire, adoration, tenderness, empathy, sympathy, understanding, connection, attachment, intimacy, relationship, commitment, loyalty, devotion, dedication, ardor, fervor, fervency, enthusiasm, zeal, ardency, fire, passion