good : a. of a favorable character or tendency. b. free from injury or disease. c. agreeable, true, right, honorable, suitable, fit, and kind.
luck : a. the things that happen to a person because of chance. b. the accidental way things happen without being planned. c. a purposeless, unpredictable, and uncontrollable force that shapes events favorably or unfavorably for an individual, group, or cause.