# What is the difference between an isolated and a closed system?

What is the difference between difference between an isolated system and a closed system?

Is it that for an isolated system, the system is free from external effects, but for closed system, the system can be subjected by external effects , but are unaffected by it?

• In other words, in thermodynamics terminology a closed system would be described by the $canonical$ ensemble and an isolated system by the $microcanonical$ ensemble. – Yiteng Jul 26 '16 at 8:15