通知
つうち · tsuuchi · JLPT N2 · noun
notice
🔔 通 (pass through) + 知 (know) = a notice that passes knowledge through to you
通 also means communicate, so 通知 is a message that carries knowledge across to you. The bell rings to alert you.
通 — 辵 (辶) walk + 甬 yǒng (phonetic)
通 is a semantic-phonetic compound. The 辶 (chuò) component means 'walk' or 'movement', giving the meaning of going through or passing. 甬 (yǒng), originally depicting a hanging bell or a path, supplies the sound. Together they convey 'to pass through, communicate, connect'.