Answer:
JUSTIFICATION BY FAITH ALONE:the sinner is justified by faith alone, meaning that nothing else is required to cooperate in order to obtain the grace of justification, and that it is not in any way necessary that he be prepared and disposed by the action of his own will (canon 9);
EXCOMMUNICATION:the action of officially excluding someone from participation in the sacraments and services of the Christian Church.
HERESY:belief or opinion contrary to orthodox religious (especially Christian) doctrine.