• 音楽おんがく — music
• 楽たのしい — fun / enjoyable
• 楽たのしむ — to enjoy
• 娯楽ごらく — entertainment
• 楽器がっき — musical instrument
• 気楽きらく — carefree / easygoing
• 楽園らくえん — paradise
• 快楽かいらく — pleasure / delight

楽 originally showed a musical instrument with strings, symbolizing sound and joy. Over time, it extended to mean enjoyment, ease, and pleasure.

Used widely in everyday words about mood, hobbies, and music — conveying happiness and lightness.

音楽おんがくを聞きくのは とても楽たのしいです。
Listening to music is very enjoyable.

週末しゅうまつは 友達ともだちと遊あそんで楽たのしみました。
I had fun hanging out with friends on the weekend.