The leader is in charge of the doing, and the facilitator is in charge of the talking about the doing. The leader is in charge of making sure operations happen (depending on the domain for example: emails are written, fences are built, websites are functioning, articles are written, clients are contacted etc.). The facilitator is in charge of structuring meetings and making sure everyone’s input can be heard at a time when it’s productive.
For more information, check out our handbook Many Voices One Song section 2.3