Queue:

• Stores messages until they're consumed
• Messages are delivered to consumers from queues
• Has properties like durability, exclusivity, and auto-delete
• FIFO (First In, First Out) message delivery
  Exchange:
• Routes messages to appropriate queues
• Doesn't store messages (except in rare error cases)
• Determines message delivery based on routing rules
• Receives messages from producers and forwards to queues
  Key difference: Exchanges are routing mechanisms, while queues are storage mechanisms.