• 季節きせつ — season
• 関節かんせつ — joint (body)
• 音節おんせつ — syllable
• 節約せつやく — saving; economizing
• 節ふし — joint; node; melody
• 節分せつぶん — Setsubun (seasonal division)
• 節目ふしめ — milestone; turning point
• 節電せつでん — power saving

節 uses the bamboo radical ⺮ with phonetic 即 (セツ). Bamboo’s nodes are “joints,” which extend metaphorically to beats/tunes in music, sections in text or speech, and divisions of time.

今いまは 春はるの季節きせつです。
It’s spring season now.

節ふしのある音楽おんがくが 好すきです。
I like music with a strong melody.