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side; edge; beside; besides; nearby
while (doing); in addition to; at the same time
「脇」 has another reading with different meanings.
道の脇に古い地蔵が立っていた。
An old stone statue stood beside the road.
勉強の脇で趣味の絵も描いている。
Besides studying, I also paint as a hobby.
仕事の脇で資格の勉強を続けている。
Besides work, I continue studying for certifications.