When using consolidated billing there are two account types. What are they?
Paying account and Linked account
Parent account and Child account
Main account and Sub account.
Main account and Secondary account.
You sign up for Consolidated Billing in the AWS Billing and Cost Management console, and designate your
account as a payer account. Now your account can pay the charges of the other accounts, which are called
linked accounts. The payer account and the accounts linked to it are called a Consolidated Billing account
family. Source: http://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/consolidated-billing.html