通過
つうか · tsuuka · JLPT N3 · noun
passage through
🚆 通過 = go through + pass by: a train passing straight through
通 means to go through, as in 通る, and 過 means to pass or go beyond, as in 過ぎる. Japanese stations use 通過 for express trains that pass through without stopping. Sound hook: tsuuka sounds like zoo car, a car passing through the zoo.
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'.