heart

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Related to three-chambered heart: Four chambered heart

heart

(Essential part), noun core, essence, marrow, nerve, nucleus, pith, sum and substance
Associated concepts: heart of the case, heart of the pleadings

heart

(Fortitude), noun ardor, backbone, doughtiness, fearlessness, fervor, focus, gallantry, intestinal fortitude, mettle, spirit, substance, toleration, valor

heart

(Kindness), noun altruism, benevolence, clemency, compassion, gentleness, grace, humanity, kind offices, kind treatment, leniency, magnanimity, mercy, pity, sympathy, temperament, tenderness
See also: center, confidence, consequence, cornerstone, essence, faith, focus, frame, main point, significance, substance