heart attack

brass

innocent, simple / unsophisticated, artless

innocence / unsophistication, naïveté

abortion (induced abortion)

sensitivity / (anatomy) nerve

conviction, confidence in

epicenter(AmE), epicentre(BrE) - the point on the Earth's surface directly above the focus of an earthquake. / (figuratively) The focal point of any activity, especially if dangerous or destructive .

an accident resulting in a personal injury or death; often a traffic injury

serious, deep, heavy (topic), profound (change), weighty (matter)