冷静【れいせい】
calmness, composure, coolness, serenity, presence of mind
静か【しずか】
quiet, silent, slow, unhurried, calm, peaceful
静止【せいし】
stillness, repose, standing still
静脈【じょうみゃく】
vein
平静【へいせい】
calm, serenity, tranquillity, tranquility
動静【どうせい】
state (of affairs), condition, developments, movements
静寂【せいじゃく】
silence, stillness, quietness
安静【あんせい】
rest, quiet, repose
静物【せいぶつ】
still object, object at rest, still life (painting, drawing)
閑静【かんせい】
quiet (e.g. neighbourhood), peaceful, tranquil
沈静【ちんせい】
stillness, tranquility, tranquillity, dullness
静まる【しずまる】
to become quiet, to quiet down, to quieten down, to calm down, to die down, to subside, to abate, to be suppressed
静粛【せいしゅく】
silent
静める【しずめる】
to quiet (a child, crowd, etc.), to quieten, to make quiet, to calm (one's nerves, excitement, etc.), to compose (oneself), to appease (someone's anger), to pacify, to settle (e.g. discord), to suppress (a rebellion, riot, fire, etc.), to quell, to put down, to get under control, to relieve (a cough, pain, etc.), to soothe, to alleviate, to ease, to appease (a spirit, soul, etc.), to pacify, to soothe