No. 4,816 in Japanese
泰
"泰" means "peaceful," "calm," or "great."
In a sentence
彼は精神的にとても泰然としている。
He is mentally very composed.
泰然（たいぜん） here means 'calm' or 'composed', describing someone's demeanor or state of mind as tranquil and steady.
この地は泰山のように安定していると聞きます。
I've heard that this land is as stable as Mount Tai.
泰山（たいざん） refers to Mount Tai, a symbol of stability and permanency in Chinese and Japanese culture, used metaphorically here.
彼の泰平の夢が叶った。
His dream of peace was fulfilled.
泰平（たいへい） means 'peace' or 'tranquility,' used here to denote an era or condition characterized by peace and contentment.
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