纯
chún · HSK 4
pure
💧 纯 = silk radical 糸 + 屯 (sprout); raw, unprocessed silk = pure
The 糸 radical on the left signals silk or thread. 屯 on the right once depicted a young sprout pushing through soil, and here lends the sound chún. Together: silk in its raw, unmixed state — hence pure or simple.
纯 — silk radical 糹+ 屯 (phonetic)
纯 is a semantic-phonetic compound: the silk radical 糹 gives the meaning (pure, unmixed silk thread) and 屯 supplies the sound. It originally described unbleached, undyed silk, then broadened to mean 'pure,' 'unmixed,' or 'simple' in a moral or qualitative sense.