祝賀
しゅくが · shukuga · JLPT N1 · noun
celebration
🎉 祝 = celebrate/wish + 賀 = congratulate: two celebrating characters stacked, so 祝賀 means celebration
Both characters point at the same idea of joyful celebration, so the compound doubles down on it. 祝 carries the wishing side and 賀 the congratulating side.
祝 — 示 (altar/spirit) + 兄 (elder brother/person speaking)
Originally an oracle bone pictograph showing a person kneeling before an altar (示) with an open mouth, representing a priest reciting prayers or invocations. The meaning extended from 'invoke blessings' to the modern sense of 'wish' or 'congratulate'. The 示 component signals ritual/spirit, while 兄 contributes both meaning and sound.