An account is a Ragic database account created for an organization, it can contain many users, which are actually user e-mail and password combinations that a person can log in with. The users within your organization would be internal users.
And the other people who are not in your organization, like clients, vendors, partners, freelancers, etc, but would like to access your Ragic account, can be external users, which are under limited privilege, but it’s free and without amount limit.