Give away verb – To make known (something abstract) through outward signs. Give out and give away are semantically related in betray topic. In some cases you can use "Give out" instead a verb "Give away".
Give out verb – To make known openly or publicly. Give away and give out are semantically related in disclose topic. Sometimes you can use "Give away" instead a verb "Give out", if it concerns topics such as betray, give to others.