聚散

聚散	jù sàn	coming together and separating / aggregation and dissipation
聚	jù	to assemble; to gather (transitive or intransitive) / (chemistry) poly-
散	sàn	variant of 散
散	sǎn	scattered / loose / to come loose / to fall apart / leisurely / powdered medicine
散	sàn	to scatter / to break up (a meeting etc) / to disperse / to disseminate / to dispel / (coll.) to sack