Calm
Tranquillity, calmness, peace and quiet, quiet, quietude, soundlessness, noiselessness, still, privateness, solitude, retirement, calm, restfulness, peacefulness, quietness, silence, hush, stillness, privacy, seclusion, isolation, and freedom from interference.
Serenity
Serenity, tranquillity, calm, composure, placidness, repose, comfort, content, security, joy, peacefulness, equanimity, calmness, placidity, rest, ease, contentment, contentedness, bliss, and nirvana.
Order
Law and order, order, peaceableness, harmoniousness, concord, amicableness, friendship, non-aggression, ceasefire, lull, lawfulness, peacefulness, harmony, accord, amity, goodwill, cordiality, non-violence, and respite.
Alliance
Treaty, ceasefire, moratorium, alliance, appeasement, truce, armistice, agreement, concord, and reconciliation.