通勤
つうきん · tsuukin · JLPT N3 · noun
work
🚆💼 通 (pass through, travel) + 勤 (work, duty) = travelling to work
通 means to pass through or go back and forth, as in 交通 (traffic). 勤 means work or service, as in 勤務 (being on duty). Together they mean the daily trip to and from your job.
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'.