People in your contacts are either a BBM contact or a contact.
BBM contacts are people you’ve added on BBM and require an invite to be a BBM contact. You can do video and voice calls with BBM contacts. BBM contacts are able to see your BBM display picture as well as your status updates.
Contacts are people in your device’s address book who are already using BBM. You can chat with them right away without sending them an invite. Contacts cannot see your BBM display picture or status updates. You can invite a contact to become a BBM contact.