凡 (fán) vs 一切 (yīqiè) — use 凡 when emphasizing commonality or ordinariness, while 一切 refers more broadly to 'everything' without the same nuance of ordinariness.

Imagine a vast, flat plain where everything looks the same—this represents the ordinary and commonplace. The character 凡 resembles a person standing with arms open wide, inviting all to join in the mundane experience of life.

Be careful not to confuse 凡 with similar characters, as it specifically conveys a sense of ordinariness. It is used in both formal and informal contexts, but is often found in literary or philosophical discussions. Common collocations include 凡事 (fán shì) meaning 'everything' or 'in all matters.'

Although not currently in the HSK level list, 凡 connects to the concept of commonality found in basic vocabulary. Students should focus on the nuances of how it contrasts with words that imply rarity or exceptionality, enhancing their understanding of everyday language.

In Chinese philosophy, the concept of the ordinary is often celebrated as part of the 'Dao' or the natural way of life, where simplicity and the mundane are valued over the extraordinary.

Learners often confuse 凡 with 非 (fēi), which means 'not' or 'non-'. For example, saying 凡不是 (fán bù shì) instead of saying '凡是' (fán shì) is incorrect; the latter means 'everything is.'